Describe the human sleep cycle, including the four stages and REM sleep, and what happens in each

Answers

Answer 1
Stage 1 is the beginning of the sleep cycle and is a relatively light stage of sleep. Stage 1 can be considered a transition period between wakefulness and sleep. Stage 2 is the second stage of sleep and lasts for approximately 20 minutes. During stage 2 sleep, You become less aware of your surroundings.Body temperature drops. Breathing and heart rate become more regular. During stage 3 sleep: Muscles relax. Blood pressure and breathing rate drop. Deepest sleep occurs. During REM sleep: The brain becomes more active.
The body becomes relaxed and immobilized. Dreams occur. Eyes move rapidly.
Answer 2

Answer:

Explanation:

Sleep begins in stage 1 and progresses into stages 2, and 3. After stage 3 sleep, stage 2 sleep is repeated before entering REM sleep. On average, we enter the REM stage approximately 90 minutes after falling asleep. The first cycle of REM sleep might last only a short amount of time, but each cycle becomes longer.


Related Questions

Why might a caregiver treat a hospital bed as a biohazard?
O A. If a hospital bed hasn't been used recently, it's considered a
biohazard.
B. If a patient's bodily fluids get on the bed, it's considered a
biohazard.
C. A hospital bed is considered a biohazard when patients spill food
or drink on it.
D. A hospital bed is always considered a biohazard, regardless of
what gets on it

Answers

Answer:

B

Explanation:

Bodily fluids are always considered a biohazard, this is why many police recovery teams work with hazmat suits.

Hope this helps!

Answer:

D

Explanation:

As they always want to make sure that the bed is safe for any paitent to lay on and if they don't treat it as a biohazard then someone could catch an infection from laying on the the same bed the other paitent laid in. Hope this answers your question.

anyone know how to stop my hook on my braces from stabbing me? i hate using wax

Answers

Answer:

just tell ur parents to call the orthodontist to get them fixed, its free

if u cant do that use wax

Find the common factors for each pair. 18and 20 20 and 40​

Answers

18 & 20 = 2 20 & 40 = 20

When looking under a microscope, a healthcare worker notices that part of a bone looks as if it were made out of tiny cylinders. The part of the bone she is looking at is the:
A) periosteum.
B) spongy bone.
C) bone marrow.
D) compact bone.

Answers

Answer:

D) compact bone

Explanation:

Compact bone tissue is made of cylindrical osteons that are aligned and travel the length of the bone.

Based on the conditioning principle known as FITT, what does the letter "F" ask a person to
consider in an exercise program?
A
what kind of exercise is done
B
how long the exercise is done
с
how strenuous the exercise is
D
how often the exercise is done

Answers

Answer:

A

Explanation:

A is the right me bro

discuss the relationship between mental and physical health​

Answers

Mental health is what you are thinking in your head. Physical health is what you are actually doing and how you do them.
Mental health is emotions in your head like depression, sadness, and so on, physical health is like a healthy mind and healthy body due to physical activity

What is the correct explanation of the joint movement called protraction?
Multiple Choice
-Posterior movement of a part of the body in the transverse plane
-Movement of a part of the body downward
-Rotation of the palm of the hand and forearm posteriorly or downward
-Anterior movement of a part of the body in the transverse plane

Movement of a part of the body upward

Answers

Answer:

D.Anterior movement of a part of the body in the transverse plane

Protraction is the anterior movement of a bone in the horizontal plane. Retractionoccurs as a joint moves back into position after protraction. Protraction and retraction can be seen in the movement of the mandible as the jaw is thrust outwards and then back inwards.

Which exercise routine should someone follow for the first few days after recovering
from an illness with symptoms that included vomiting, diarrhea, and fever ?
A
The student can exercise in the heat, as long as a sports drink is consumed
before the activity.
B.
The student should limit exercise in the heat, and should stay well hydrated
before and during the activity.
С
The student can exercise in the heat, as long as an extra layer of clothing is
worn during the activity.
D
The student should limit exercise in the heat, and should wear a hat to stay
warm during the activity.

Answers

Answer:B

Explanation:

The student should limit time in the heat, as well as limit what thick clothing they wear as too not accumulate too much heat from exercising. Along with nutrition, they should not eat too heavy of a meal as to not upset your stomach but should also drink water as to stay hydrated.

Free or low-cost apps have few of the same benefits as fitness trackers.

True
False

Answers

the answer to your question is true

Answer:

the right answer is false

Explanation:

how do friends affect your personal physical fitness and dietary practices?

Answers

Answer:

.

Explanation:

they can motivate you to do physical activities with them or they can support you

What two molecules do cells need to make energy

Answers

Answer:Glucose and ATP. Two of the most important energy-carrying molecules are glucose and ATP (adenosine triphosphate).

Explanation:

All organisms make use of a molecule called glucose and a process called glycolysis to meet some or all of their energy needs. For single-celled prokaryotic organisms, such as bacteria, this is the only process available for generating ATP (adenosine triphosphate, the "energy currency" of cells).

Answer:

Glucose and ATP

Explanation:

Two of the most important energy-carrying molecules are glucose and ATP (adenosine triphosphate).

Its urgent please? help!!!!!!

Answers

I’m pretty sure the answer is C
the answer should be D.

what are symptoms of ulcer​

Answers

Pain in the chest,heart burn,indigestion, nausea, passing excessive amounts of gas, or vomiting.

Explanation:

Symptoms

Burning stomach pain

Feeling of fullness, bloating or belching

Intolerance to fatty foods

Heartburn

Nausea

Less often, ulcers may cause severe signs or symptoms such as:

Vomiting or vomiting blood — which may appear red or black

Dark blood in stools, or stools that are black or tarry

Trouble breathing

Feeling faint

Nausea or vomiting

Unexplained weight loss

Appetite changes

I KNOW it's been a long day but right now I need you TO TAKE A DEEP BREATH. DO THIS 5 TIMES.


nice to see ya. good night And be kind to youself. ​

Answers

Answer:

thanks for the advice bud

Explanation:

what is the term for your body being at equilibrium​

Answers

I think it’s homeostasis

Give an example of how a TV, movie, or video game character interacts with fire and explosives in ways that are not realistic.

Answers

Yoshikage kira this is from jojo bizarre adventure part 4

What is the refusal to face a feeling you do not want to accept called

Answers

The answer is Denial

which of the following is not a sign of hypothermia?
A:uncontrolable shivering
b:blue tinge to lips
c:numb to feet and hands
d:feeling hyper or giddy

Answers

Answer:

d

Explanation:

d- feeling hyper or giddy

my father said, "Do some yoga daily ".​

Answers

Answer:

my father said, "Do some yoga daily ", and i said, "Do exercise daily".

Explanation:

what do you need help with?

My Father said, "Do some yoga daily." ?

What causes alcohol poisoning?

Answers

Answer:

A major cause of alcohol poisoning is binge drinking — a pattern of heavy drinking when a male rapidly consumes five or more alcoholic drinks within two hours, or a female rapidly consumes at least four drinks within two hours. An alcohol binge can occur over hours or last up to several days.

Explanation:

Answer and Explanation:

Binge drinking (heavy drinking in a short period of time) Is what causes alcohol poisoning.

Symptoms of alcohol poisoning are...

Confusion , sickness (vomitng  or nausea), slurred speech , unconsciousness/unresponsiveness , aggression, seizures , and slowness of breathing.

There is a link between the amount you sweat and the amount of urine you produce. How does the body coordinate these two responses?

Answers

The different functions of your body and different ways your body acts.

Sweating and urination are the two processes that are part of homeostasis that balances the body's functions. These two activities are coordinated and regulated according to the body's requirements.

What are perspiration and urination?

Urination has been the process of the excretory system that excretes the fluid out from the body and is the part of the homeostasis function that regulates and coordinates the fluid balance in the body.

Perspiration is the homeostatic process that eliminates salts and fluid through the skin surface and glands to maintain the salt concentration and pH of the body fluids. Both these processes eliminate excess and waste from the body to maintain and regulate homeostasis.

Therefore, sweat and urine depend on homeostatic functions.

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Which of the following is LEAST likely to influence the development of a child’s self-concept?
1. a TV celebrity
2. other family members
3. parents
4. teachers

Answers

Answer:

C. Parents

Explanation:

Children's self-concepts are likely associated with child, parent, and family characteristics.

Answer:

A.

Explanation:

I am not too sure.. I think that a child would be more influenced by their family and teachers.

Knives should be kept sharp and stored separately from other utensils.
False
True

Answers

Answer:

true!!!!!!!!!!!!!!!!!!!!!

Have you changed a baby’s diaper before?

Answers

Answer:

Nope! But i will soon!

Explanation:

No lol which is why I havent had a child yet

1. Which kind of knife is used most often in the kitchen? Why?

2. What is a fruit? Give an example of a fruit.

3. How are vegetables prepared differently for salad than they are for crudités?

4. What color vegetables are a good source of calcium? What's an example of a vegetable
that you would eat for calcium?

5. Which fruits are typically poached? What makes these fruits good for poaching?

Answers

Answer:

a kitchen knife

a fruit is a sweet food that grows on trees or bushes

Chef's knife is used in the kitchen most often because it has a wide blade by which chopping becomes easy.

What is a fruit?

A fully developed, ripened ovary and its contents make up a fruit. The reproductive organ that contains ovules in a plant's bloom is called an ovary. Like an apple is a fruit.

Vegetables like carrots and celery should be chopped into sticks for crudités. You can separate florets from broccoli and cauliflower. Depending on their size, peppers can be chopped into quarters or strips. Vegetables for salads should be diced into uniform, orderly bite-sized pieces. Green leafy vegetables are good sources of calcium, like broccoli. Peas, sprouts, beans, and lentils are good souces of protein, fibre, and calcium.

Good options for poached fruits include apples, apricots, pears, nectarines, peaches, plums, figs, and cherries. Melons, bananas, and the majority of berries are less appealing because heated liquids cause them to degrade quickly.

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Forming new red blood cells is a function of:

digestive system
integumentary system
skeletal system
nervous system


PLZ HELP WILL GIVE BRAINLIEST! <3

Answers

Answer:

The skeletal system

Explanation:

This is because the bone marrow inside of the bones produces red and white blood cells and platelets.

I hope this helps, good luck!

The bone marrow inside of the bones produces red and white blood cells and platelets. Therefore, option (C) is correct.

What is role of skeletal system in RBC formation?

The spongy tissue known as bone marrow can be found in the center of certain bones. The vast majority of blood cells are produced in the bone marrow of an individual. The production of red blood cells is called haemopoiesis.

Hemocytoblasts are the name given to stem cells that are found in the red bone marrow. They are the source of all of the elements that are generated in blood. If a stem cell decides to become a cell known as a proerythroblast, it will develop into a new red blood cell. Proerythroblasts are found in the bone marrow.

Learn more about skeletal system, here:

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How do I boost my motivation?
Like, I don't feel like doing ANYTHING. I don't wanna get out of bed, let alone do SCHOOL. I don't want to get expelled. So, I have to find a way to want to do this. How tho?

Answers

I can boost my motivation by changing my sleep habits and taking a walk everyday after school and I will try to do something positive so that I have motivation to do my homework

What is a cancer that forms within the human body?

Answers

Answer:

Transitional cell carcinoma is a cancer that forms in a type of epithelial tissue called transitional epithelium, or urothelium. This tissue, which is made up of many layers of epithelial cells that can get bigger and smaller, is found in the linings of the bladder, ureters, and part of the kidneys (renal pelvis), and a few other organs.

HOPE THIS HELPS

TAKE CARE

HAVE A NICE DAY

Explanation:

Answer:

A cancer that forms within the human body is called Transitional cell carcinoma.

Explanation:

Transitional cell carcinoma is a cancer that forms in a type of epithelial tissue called transitional epithelium, or urothelium. This tissue, which is made up of many layers of epithelial cells that can get bigger and smaller, is found in the linings of the bladder, ureters, and part of the kidneys (renal pelvis), and a few other organs.

Blood samples are important for toxicology tests in crime forensics. However, there are other biological samples that are commonly used for post-mortem toxicology. Research three such biological specimens. Describe how they are collected and their significance.

Answers

Answer:

urine, nails, hair

Explanation:

Hair - Is a special matrix for the retrospective investigation of chronic drug abuse or poisoning in criminal cases and allows to demonstrate with sensitive methods even a single administration in low amount.

Urine - Is a preferred sample as it is easy to procure for forensic findings. Drugs and drug metabolites can be the target chemicals for the findings of the forensic explorations in different modes of deaths.

Nails - Using keratinized samples has several advantages over methodologies employing body fluids. Long term exposures to different drugs result in the accumulation of the same in these structures. Nails have been shown to accumulate drugs following a long duration of drug intake. Finger and toenails can accumulate drugs during long term exposure

Answer:

Vitreous humor, bile, gastric content

Explanation:

Vitreous humor is the gel-like substance that fills the eye. It is collected using a hypodermic needle. A single eye yields about 2–3 mL of vitreous humor. Vitreous humor is least likely to get contaminated by other body fluids. Also, it is less susceptible to microbial contamination, which makes it important evidence. Vitreous humor is mainly used to detect blood alcohol concentrations. Hence, it is significant in cases of motor accidents, sui/cides, and homicides.

The fluid produced by the liver and stored in the gallbladder is known as bile. For postmortem analysis, it is collected using a hypodermic syringe. Sometimes, to avoid contamination, it is necessary to tie the gallbladder prior to collection. Many drugs and heavy metals accumulate in bile. Hence, bile is important evidence where there is a possibility of metal poisoning or drug poisoning.

Gastric content is valuable in cases of poisoning. It is used for initial screening because undigested substances may appear in the gastric content. Sometimes, the odor of the gastric content can provide a clue about what may be present in the sample, for example, pesticide or cyanide.

Which correctly lists the weeks associated with each trimester? first trimester (weeks 1–12); second trimester (weeks 13–26); third trimester (weeks 27–40) first trimester (weeks 27–40); second trimester (weeks 13–26); third trimester (weeks 1–12) first trimester (weeks 1–3); second trimester (weeks 4–6); third trimester (weeks 7-9) first trimester (weeks 7–9); second trimester (weeks 4–6); third trimester (weeks 1–3)

Answers

Answer:

The first one is correct. :)

First trimester: 1 - 12 weeks

Second trimester: 13 - 26 weeks

Third trimester: 27 - 40 weeks, or end of pregnancy

Answer:

The answer is A. Have an amazing day :)

Explanation:

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