Question

In: Anatomy and Physiology

Question 1 Positive feedback differs from negative feedback because ________. positive feedback is generally beneficial while...

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

Solutions

Expert Solution

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............


Related Solutions

Economics Question 1. a. Will positive network effects lead to positive or negative feedback effects, and...
Economics Question 1. a. Will positive network effects lead to positive or negative feedback effects, and given these feedback effects, will this lead to a larger or smaller size of the firm? b. The article “The Nature of the Firm” by Ronald Coase introduced the idea of transaction costs. Discuss how transaction costs also affect the size of the firm?
Negative and positive feedback mechanisms used to maintain homeostasis. Describe one negative and one positive feedback...
Negative and positive feedback mechanisms used to maintain homeostasis. Describe one negative and one positive feedback regulation (8pts). For each negative and positive feedback: What is the variable? (0.5pt) What is the normal range? (0.5 pt) Which conditions may change the variable? (0.5 pt) How the changes to be detected? (1 pt) What is/are the responses(s)? (1pt) What is the final effect? (0.5 pt)
compare and contrast Negative feedback and positive feedback. In 200 words
compare and contrast Negative feedback and positive feedback. In 200 words
Topic 1: Feedback loops. Define & give real-life physiological examples of a negative and positive feedback...
Topic 1: Feedback loops. Define & give real-life physiological examples of a negative and positive feedback loop, in your answer include. Definitions for the negative and positive feedback loop Physiological examples of each A general description of the four major components of the feedback loop and what those components are in each of your examples A drawing of the feedback loop including where the negative and positive feedback occurs.
Label AND Describe a feedback loop for: ONE negative feedback ONE positive feedback ONE antagonistic pair...
Label AND Describe a feedback loop for: ONE negative feedback ONE positive feedback ONE antagonistic pair of feedbacks Include all 5 steps for each feedback
1). Explain why positive feedback is more likely than negative feedback to disturb homeostasis. 2). What...
1). Explain why positive feedback is more likely than negative feedback to disturb homeostasis. 2). What is the main chemical similarity between carbohydrates and lipids? What are the main differences between them? 3). Define hypotonic, isotonic, and hypertonic, and explain why these concepts are important in clinical medical practice. 4). Summarize the structural and functional differences between DNA and RNA.
Why is positive feedback much less common than negative feedback in body systems?
Why is positive feedback much less common than negative feedback in body systems?
Give two examples of a negative feedback loop and one example of a positive feedback loop...
Give two examples of a negative feedback loop and one example of a positive feedback loop within normal physiologic function. Describe each homeostatic mechanism using detailed descriptions. For each example predict the result at an organismal level if normal function was impaired at the molecular level.
Describe one example of positive feedback and one of negative feedback, in other systems that have...
Describe one example of positive feedback and one of negative feedback, in other systems that have many interacting parts – such as economic, social, political systems.
Discuss homeostasis within the context of positive and negative feedback. What type of feedback is predominantly...
Discuss homeostasis within the context of positive and negative feedback. What type of feedback is predominantly used? Why? Be able to give examples of both types of feedback.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT