1. Give an example of negative feedback system in the body and how it works.

2.What name is given to all chemical reactions that occur within body cells?

3. Why is it necessary to be in a pressured cabin when flying at 30,000 feet ?

4.What process allows us to adjust to either extreme heat or cold?

5. When we begin to get dehydrated , we usually get thirsty, which causes us to drink? Is this a negative or positive feedback control system? explain.

1.List and describe the four forms of energy used in the human body.

2.Describe the three major types of chemical bonds and any subtype they have. Compare and contrast the three.

3.Define homeostasis and describe the parts and functions of the homeostatic control mechanism.

4.Describe the four macromolecules, in detail. Include the elements that build the four molecules, the building blocks, and the major functions of the four.

5.List and describe the structural organization of the human body.

Please answer this. ITS URGENT!!!!

Describe how the endocrine system is different from the nervous system the other control system of the body. (Please answer in ~250 words)

Question 1

1. Positive feedback differs from negative feedback because ________.

   		positive feedback is generally beneficial while negative feedback is typically harmful
   		positive feedback tends to enhance the triggering stimulus while negative feedback tends to return the body to a homeostatic balance or "ideal" level
   		positive feedback is critical to health while negative feedback serves only to alert us to potential health threats
   		positive feedback provides moment-to-moment wellbeing while negative feedback causes a cascade effect

2 points

Question 2

1. A substance received or given off by your body will likely pass through which tissue type?

   		muscle tissue
   		epithelial tissue
   		nervous tissue
   		connective tissue

2 points

Question 3

1. What are the most important factors influencing hair growth?

   		sex and hormones
   		age and glandular products
   		nutrition and hormones
   		the size and number of hair follicles

2 points

Question 4

1. The apocrine sweat glands are not the primary gland involved in thermoregulation.

   True

   False

2 points

Question 5

1. Digital Subtraction Angiography (DSA) imaging is most useful in discovering obstructed blood supplies in organs and tissues.

   True

   False

2 points

Question 6

1. Some of the nerve endings in the skin are sensitive to changes in temperature. They are part of a negative feedback mechanism regulating body temperature. These nerve endings represent a(n) ________ in the negative feedback mechanism.

   		control center
   		effector
   		homeostatic balance or "ideal" value
   		receptor

2 points

Question 7

1. Fibrocartilage is also known as gristle.

   True

   False

2 points

Question 8

1. William has a cut that is superficial, painful but not bleeding. Based on this information you would predict that the cut has penetrated to ________.

   		the stratum corneum but not the stratum granulosum
   		the subcutaneous layer, but no deeper
   		the stratum basale but not the dermal layers
   		the papillary layer but not the reticular layer

2 points

Question 9

1. Your instructor gives you an unknown organ for you to examine and identify through microscopy. What should you do first with the sample?

   		examine it for artifacts
   		stain it to enhance contrast
   		cut it into sections
   		fix it with preservative

2 points

Question 10

1. Select the most correct statement concerning skin cancer.

   		Basal cell carcinomas are the least common but most malignant.
   		Melanomas are rare but must be removed quickly to prevent them from metastasizing.
   		Squamous cell carcinomas arise from the stratum corneum.
   		Most tumors that arise on the skin are malignant.

2 points

Question 11

1. One of the descriptions below is from the perspective of physiological study, the rest are from an anatomical perspective. Select the description below that comes from physiological perspective.

   		The contraction of smooth muscle in blood vessels (vasoconstriction) can reduce the flow of blood through the vessel.
   		The chambers of the heart and blood vessels leading to and from the heart are separated by valves composed of fibrous connective tissue.
   		The pancreas lies deep to the stomach within the abdominal cavity.
   		The skull is formed by 22 facial and cranial bones.

2 points

Question 12

1. The study of anatomy and physiology assumes and describes a healthy body. Select the description below that does NOT explain why this approach is useful.

   		A healthy body provides a common standard to compare to.
   		Study of a healthy body is less intimidating and more familiar new students.
   		A healthy body establishes what "normal" is.
   		Study of a healthy body provides a foundation for a more complete understanding of all human bodies.

2 points

Question 13

1. A light skinned person may appear pink when they become over heated. The best explanation for this is ________.

   		the melanocytes are responding to the heat of the sun and change the appearance of the skin with increased production
   		blood flow has increased to the sweat glands in order to increased their metabolic activity
   		the heart is pumping faster because the person was probably exercising
   		the blood vessels of the dermis have undergone vasodilation, bringing a greater volume of blood to the skin

2 points

Question 14

1. The reason that intervertebral discs exhibit a large amount of tensile strength, which allows them to absorb shock, is because they possess ________.

   		collagen fibers
   		hydroxyapatite crystals
   		elastic fibers
   		reticular fibers

2 points

Question 15

1. The right hypochondriac region contains the majority of the stomach.

   True

   False

2 points

Question 16

1. Lungs carry out an excretory function.

   True

   False

2 points

Question 17

1. The coxal joint is most likely found in ________ region of the body.

   		hip
   		foot
   		hand
   		groin

2 points

Question 18

1. Positive feedback mechanisms tend to enhance the original stimulus so that the response is accelerated.

   True

   False

2 points

Question 19

1. Which of the following is the best explanation for why cells are considered the smallest units of living things.

   		Cells cannot be seen with the naked eye and are considered microscopic.
   		Cells have the ability to reproduce identical copies of themselves in a process called mitosis.
   		Cells are the simplest structure to fit all of the characteristic necessary to be considered alive.
   		Cells are highly ordered and complex.

2 points

Question 20

1. Which of the following are survival needs of the body?

   		nutrients, water, atmospheric pressure, and oxygen
   		nutrients, water, movement, and reproduction
   		nutrients, water, growth, and reproduction
   		water, atmospheric pressure, growth, and movement

Give 3 examples each for Field Tests, Field/Lab tests, and Lab tests and explain when and why you would use them

Chronic kidney disease is a gradual loss of kidney function. In this assignment, you will explore this disease in more detail using the scenario below.

Scenario:
You are a healthcare provider who is preparing to meet with a patient who has recently been diagnosed with chronic kidney disease. You are tasked with explaining this disease and its treatment options to your patient.

To complete this assignment, do the following:

ANSWER WHOLE THING PLEASE. THANK YOU

In a minimum of 2 pages (not counting the references page), address the following:

1. • Explain how chronic kidney disease develops and the potential causes.
   • Describe the treatment options that exist.
2. Include a references page at the end of your document, formatted using the APA guidelines, that lists your research sources.
3. PLEASE MAKE SURE TO USE COMPLETE SENTENCES AND MAKE IT CLEAR TO UNDERSTAND.

Part A: 1. Imagine you are being chased through the woods by a hungry bear. a. Which nervous system would engage (parasympathetic or sympathetic)? Why is this? b. What would be the effects of this system on your: i. Eyes ii. Skin iii. Respiratory System iv. d. Skeletal muscles c. Describe the neurotransmitter family that is activated in this situation. 2. Imagine that you are home with the flu. a. Which nervous system would engage? Why is this? b. What would be the effects of this system on your: i. Eyes ii. Skin iii. Respiratory System iv. Skeletal muscles c. Describe the neurotransmitter family that is activated in this situation.

Part B: Jack is a 78-year-old man. While most of the time Jack is able to live by himself, he does often forget where he put his car keys or what time his next doctor’s appointment is. 1. Would you classify Jack as an Alzheimer’s patient? Why or why not? Provide one (1) supporting fact. 2. Describe one (1) type of treatment or assistance you would recommend for Jack, with one (1) supporting fact.

(a) How does VO2max define subject's aerobic capacity?

(b) Why is VO2 a measure of cardiovascular fitness?

The health care provider tells Mr. J that she would like to biopsy the “knot” in his neck to rule out Hodgkin lymphoma. After the HCP leaves the room, Mr. J immediately starts wringing his hands and says, “Oh my goodness. I know I am going to die. My friend had something like this, and he was dead in 6 months. Who will take care of my family?” 3. How will the nurse respond to Mr. J’s concerns? 4. What constitutes a definitive diagnosis of Hodgkin lymphoma? 5. What are some manifestations associated with non-Hodgkin lymphoma? 6. The lymph node biopsy is positive for the Reed-Sternberg cell. What type of treatment is indicated?

Thick skin can be found in only two locations on the human body.

• Name the two locations
• Then, identify some anatomical differences between thick and thin skin.
• Explain why these differences are so important.

Calculate cardiac ejection fraction from the following data:

ROI

Left Ventricle- 74650 ED Counts, 32115 ES counts, 947 Pixels

Background-694 ES counts, 115 Pixels

PLEASE go step by step