Week 1 - Homeostasis & Feedback Systems

Question 1

Using your fingers to find your pulse on your wrist is an example of

a) auscultation.
b) palpation.
c) percussion.
d) laparoscopy.
e) electrocardiography.

Answer 1

b) palpation.

Question 2

Percussion techniques can be used to detect

a) heart beats.
b) pulse rate.
c) arthritis.
d) fluid in the lungs.
e) enlarged organs.

Answer 2

d) fluid in the lungs.

Question 3

The composition of this body fluid, which fills the narrow spaces between cells and tissues, directly affects the proper functioning of cells.

a) lymph
b) blood plasma
c) interstitial fluid
d) intracellular fluid
e) vitreous body

Answer 3

c) interstitial fluid

Question 4

This is the structure of a feedback system that receives output from the control center.

a) receptor
b) stimulus
c) response
d) effector
e) efferent pathway

Answer 4

d) effector

Question 5

This is the structure of a feedback system that provides input to the control center.

a) receptor
b) muscle
c) response
d) effector
e) efferent pathway

Answer 5

a) receptor

Question 6

Objective changes in a patient’s normal body function that can be directly observed or measured by a clinician are referred to as

a) symptoms.
b) disorders.
c) disturbance.
d) diseases
e) signs.

Answer 6

e) signs.

Question 7

This directional term means farther from the midline.

a) medial
b) anterior
c) proximal
d) deep
e) lateral

Answer 7

e) lateral

Question 8

This directional term means farther from the attachment of a limb to the trunk or farther from the origination of a structure.

a) deep
b) contralateral
c) lateral
d) cephalic
e) distal

Answer 8

e) distal

Question 9

Choose the directional term that would make the following sentence correct. The heart is_____ to the liver.

a) inferior
b) anterior
c) contralateral
d) superior
e) superficial

Answer 9

d) superior

Question 10

Choose the directional term that would make the following sentence correct. The sternum is____ to the heart.

a) posterior
b) anterior
c) inferior
d) superior
e) lateral

Answer 10

b) anterior

Question 11

What is the name given if the body cannot maintain a state of balance through a feedback?

Answer 11

Homeostatic imbalance

Question 12

What hormone is stimulated during childbirth?

Answer 12

Oxytocin

Question 13

What is an example of a negative feedback system?

Answer 13

Body temperature

Question 14

What is an example of a positive feedback system?

Answer 14

Child birth

Question 15

What is a stimulus?

Answer 15

Anything that changes a condition

Question 16

What is the definition of Homeostasis?

Answer 16

The body’s ability to maintain a balanced internal environment.

Question 17

What are some examples of body processes that are regulated?

Answer 17

1) Blood pressure
2) Body Temperature
3) Blood Glucose

Question 18

Define a feedback system?

Answer 18

It involves the the continual monitoring, evaluating & changing of a body condition to keep it in it’s normal range.

Question 19

What is the function of a feedback system?

Answer 19

To feedback information to change the controlled condition.

Question 20

Name the 3 main components of a feedback system.

Answer 20

1) Receptor (nerve impulse/action potential)
2) Control Centre
3) Effector

Question 21

Define the term receptor & give an example.

Answer 21

A receptor constantly monitors the controlled condition. When changes occur it send input about the change to the control centre.

Question 22

Define the term control center & give an example.

Answer 22

The control centre determines the particular setpoint for the controlled condition which is the range of values in which the condition is to be regulated.

Question 23

What is the most common control center in the body?

Answer 23

The Brain

Question 24

Define the term effector & give an example.

Answer 24

The effector receives the output sent from the control center & generates a specific response or effect that can bring the controlled condition back to its original setpoint.

Question 25

What is the difference between a negative and positive feedback system?

Answer 25

A negative reverses a chance in a controlled condition whereas a positive reinforces a chance in on of the body’s controlled conditions i.e. child birth.

Question 26

Give examples of homeostatic imbalances.

Answer 26

Headache, nausea, anxiety

Question 27

Describe the anatomical position

Answer 27

Standing upright, head level & eyes facing forward. Feet flat on floor & orientated forward & arms at side with palms facing forward.

Question 28

What are the six life processes of the human body?

Answer 28

1) Metabolism
2) Growth
3) Movement
4) Responsiveness
5) Differentiation
6) Reproduction

Question 29

List the 11 systems of the body

Answer 29

1) Integumentary
2) Skeletal
3) Muscle
4) Digestive
5) Cardiovascular
6) Lymphatic
7) Nervous
8) Endocrine
9) Urinary
10) Reproductive
11) Respiratory

Question 30

Which feedback system brings you back to the controlled condition?

Answer 30

Negative (most common out of the two)