B5 - Homeostatis And Response

Question 1

What is homeostasis?

Answer 1

The maintenance of a stable internal environment in an organism.

Question 2

True or False: Homeostasis only involves temperature regulation.

Answer 2

False

Question 3

Fill in the blank: Homeostasis involves the regulation of __________, pH, and ion concentrations.

Answer 3

temperature

Question 4

What is the role of the hypothalamus in homeostasis?

Answer 4

It acts as the control center for temperature regulation and other homeostatic processes.

Question 5

Which organ is primarily responsible for regulating blood glucose levels?

Answer 5

The pancreas

Question 6

Multiple Choice: Which hormone lowers blood glucose levels? A) Glucagon B) Insulin C) Adrenaline

Answer 6

B) Insulin

Question 7

What is negative feedback?

Answer 7

A process that counteracts a change in a physiological variable to maintain homeostasis.

Question 8

True or False: Positive feedback enhances a change in a physiological variable.

Answer 8

True

Question 9

Fill in the blank: The __________ is responsible for the fight or flight response.

Answer 9

autonomic nervous system

Question 10

What are effectors in the context of homeostasis?

Answer 10

Muscles or glands that bring about the response to restore equilibrium.

Question 11

What is the main function of the kidneys in homeostasis?

Answer 11

To regulate water and electrolyte balance, and remove waste products.

Question 12

Multiple Choice: Which of the following is NOT a component of homeostatic control? A) Receptor B) Effector C) Stimulus D) Inhibitor

Answer 12

D) Inhibitor

Question 13

What is the primary function of the skin in maintaining homeostasis?

Answer 13

To regulate body temperature through sweating and blood flow.

Question 14

True or False: The endocrine system plays a significant role in homeostasis.

Answer 14

True

Question 15

Fill in the blank: Hormones are __________ messengers that regulate physiological processes.

Answer 15

chemical

Question 16

What is the role of glucagon?

Answer 16

To raise blood glucose levels by promoting the conversion of glycogen to glucose in the liver.

Question 17

What is the term for the process of maintaining a constant internal environment?

Answer 17

Homeostasis

Question 18

Multiple Choice: Which of the following is a response to high blood sugar levels? A) Release of glucagon B) Release of insulin C) Decrease in glucose uptake

Answer 18

B) Release of insulin

Question 19

What is thermoregulation?

Answer 19

The process by which the body maintains its core internal temperature.

Question 20

True or False: Homeostasis is only necessary for animals.

Answer 20

False

Question 21

Fill in the blank: The __________ system regulates long-term changes in the body, including growth and metabolism.

Answer 21

endocrine

Question 22

What do we call the body’s response to an increase in temperature?

Answer 22

Vasodilation and sweating

Question 23

What is the function of the sweat glands in thermoregulation?

Answer 23

To produce sweat, which cools the body through evaporation.

Question 24

Multiple Choice: Which part of the brain controls body temperature? A) Cerebellum B) Hypothalamus C) Brainstem

Answer 24

B) Hypothalamus

Question 25

What is osmoregulation?

Answer 25

The control of water and electrolyte balance in the body.

Question 26

True or False: Blood pressure is a factor that is regulated by homeostasis.

Answer 26

True

Question 27

Fill in the blank: The __________ feedback loop is used to amplify a response in the body.

Answer 27

positive

Question 28

What is the role of the liver in homeostasis?

Answer 28

To regulate blood sugar levels, produce bile, and detoxify substances.

Question 29

Multiple Choice: Which hormone is released in response to stress? A) Insulin B) Cortisol C) Estrogen

Answer 29

B) Cortisol

Question 30

What is the role of the negative feedback mechanism in the endocrine system?

Answer 30

To prevent overproduction or underproduction of hormones.

Question 31

True or False: The body can function properly without homeostasis.

Answer 31

False

Question 32

Fill in the blank: __________ is the process of maintaining a stable internal environment despite external changes.

Answer 32

Homeostasis

Question 33

What is the significance of maintaining blood pH within a narrow range?

Answer 33

It is essential for proper enzyme function and metabolic processes.

Question 34

What happens during vasoconstriction?

Answer 34

Blood vessels narrow, reducing blood flow to the skin to conserve heat.

Question 35

Multiple Choice: Which organ regulates electrolyte balance? A) Heart B) Lungs C) Kidneys

Answer 35

C) Kidneys

Question 36

What is the primary method of heat loss from the body?

Answer 36

Radiation

Question 37

True or False: The body can only respond to one stimulus at a time.

Answer 37

False

Question 38

Fill in the blank: Feedback mechanisms are essential for __________ in biological systems.

Answer 38

homeostasis

Question 39

What is the role of the adrenal glands in response to stress?

Answer 39

They release hormones like adrenaline to prepare the body for a 'fight or flight' response.