Question

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

Answer 1

1. Positive feedback differs from negative feedback because :

Positive feedback tends to enhance the trigging stimulus while negative feedback tends to return the body to a homeostatic balance or " ideal" level.

2. A substance received or given off by your body will likely pass through EPITHELIAL TISSUE.

3. The most important factors influencing hair growth are NUTRITION & HORMONES

4. The apocrine sweat glands are not primary gland involved in thermoregulation. The statement is TRUE.Our skin helps us regulate the body temperature by causing shivering.

5.Digital subtraction angiography imaging is most useful in discovering obstructed blood supplies in organs and tissue.The statement is TRUE.This Angiography is used to clearly visualize blood vessels in a bony or dense soft tissue environment.

6. Some of the nerve endings in the skin are sensitive to changes in temperature.They are the part of negative feedback mechanism regulating body temperature .These nerve endings represent RECEPTOR in the negative feedback mechanism.

7. Fibricartilage is also known as gristle is a FALSE statement. Fibrocartilage is a transitional tissue.

8. William has a cut that is superficial, painful but not bleeding.Based on this information one can predict that the cut has penetrated to THE STRATUM BASALE BUT NOT THE DERMAL LAYERS.

9. If the examiner gives you an unknown organ to examine and identify through microscope, we should first FIX THE SAMPLE WITH PRESERVATIVE.

10. The correct statement regarding skin cancer is : MELANOMAS ARE RARE BUT MUST BE REMOVED QUICKLY TO PREVENT THEM FROM METASTASIZING.

11.The description that comes from an PHYSIOLOGICAL perspective is : THE CONTRACTION OF SMOOTH MUSCLE IN BLOOD VESSEL CAN REDUCE THE FLOW OF BLOOD THROUGH THE VESSEL.

12. The description that does not explain why this approach is useful is : STUDY OF HEALTHY BODY IS LESS INTIMIDATING AND MORE FAMILIAR NEW STUDENTS.

13. A light skinned person may appear pink when they become overheated because BLOOD VESSELS IN DERMIS HAVE UNDERGONE VASODILATION, BRINGING GREATER VOLUME OF BLOOD TO THE SKIN.

14. The reason that intervertebral discs exhibit a large amount of tensile strength which allows them to absorb shock because they posses COLLAGEN FIBERS.

15. The right hypochondric region contains majority of the stomach is FALSE statement.This area is home to organs such as liver, gallbladder, right kidney, and small intestine.

16. Lungs carry out an excretory function is a TRUE statement. It plays an important role in removing carbon di oxide from the blood.

17. The coxal joint is found most likely in HIP region.

18. Positive feedback mechanisms tend to enhance the original stimulus so that the response is accelerated is a TRUE statement.

19. The Cells are the simplest structures to fit all of the characteristics necessary to be considered alive is the best explanation for why cells are considered the smallest units of living things.

20. NUTRIENTS , WATER, ATMOSPHERIC PRESSURE, and OXYGEN are the survival needs of the body.

Hope the answer was helpful.

Thanks............