topic 7

Question 1

What is homeostasis?

Answer 1

The process by which organisms maintain a stable internal environment.

Question 2

True or False: Homeostasis is only important for temperature regulation.

Answer 2

False

Question 3

Fill in the blank: The main organ responsible for thermoregulation in humans is the __________.

Answer 3

hypothalamus

Question 4

What are the two main systems involved in coordination and control in animals?

Answer 4

The nervous system and the endocrine system.

Question 5

Multiple choice: Which of the following is a function of the nervous system? A) Hormone secretion B) Reflex actions C) Digestion

Answer 5

B) Reflex actions

Question 6

What is a reflex action?

Answer 6

An automatic response to a stimulus that does not involve conscious thought.

Question 7

True or False: Hormones are released into the bloodstream.

Answer 7

True

Question 8

What is the role of the pituitary gland?

Answer 8

It secretes hormones that regulate various bodily functions and controls other endocrine glands.

Question 9

Fill in the blank: The primary function of insulin is to lower __________ levels in the blood.

Answer 9

glucose

Question 10

What is the role of the adrenal glands?

Answer 10

They produce hormones such as adrenaline that help the body respond to stress.

Question 11

Multiple choice: Which hormone increases blood sugar levels? A) Insulin B) Glucagon C) Thyroxine

Answer 11

B) Glucagon

Question 12

What does the term ‘negative feedback’ mean?

Answer 12

A process that counteracts a change in the body to maintain homeostasis.

Question 13

True or False: The sympathetic nervous system prepares the body for ‘fight or flight’ responses.

Answer 13

True

Question 14

Fill in the blank: The __________ nervous system is responsible for calming the body after a stress response.

Answer 14

parasympathetic

Question 15

What is the function of the hypothalamus in homeostasis?

Answer 15

It regulates body temperature, hunger, thirst, and the sleep-wake cycle.

Question 16

Multiple choice: Which of the following is NOT a part of the central nervous system? A) Brain B) Spinal cord C) Peripheral nerves

Answer 16

C) Peripheral nerves

Question 17

What type of cell transmits nerve impulses?

Answer 17

Neuron

Question 18

True or False: The endocrine system works faster than the nervous system.

Answer 18

False

Question 19

Fill in the blank: The __________ is responsible for controlling the body’s metabolism.

Answer 19

thyroid gland

Question 20

What is the function of sensory neurons?

Answer 20

They carry signals from sensory receptors to the central nervous system.

Question 21

Multiple choice: Which part of the neuron receives signals? A) Axon B) Dendrites C) Synapse

Answer 21

B) Dendrites

Question 22

What are hormones?

Answer 22

Chemical messengers released by glands that regulate various functions in the body.

Question 23

True or False: The pancreas is both an endocrine and exocrine gland.

Answer 23

True

Question 24

Fill in the blank: The __________ is a structure in the brain that plays a key role in regulating homeostasis.

Answer 24

hypothalamus

Question 25

What role does feedback inhibition play in homeostasis?

Answer 25

It helps to prevent overproduction of hormones and maintains balance in bodily functions.

Question 26

Multiple choice: Which hormone is involved in the fight-or-flight response? A) Adrenaline B) Insulin C) Estrogen

Answer 26

A) Adrenaline

Question 27

What is the function of motor neurons?

Answer 27

They transmit signals from the central nervous system to muscles and glands.

Question 28

True or False: The autonomic nervous system controls voluntary movements.

Answer 28

False

Question 29

Fill in the blank: __________ are the specialized cells that detect stimuli in the environment.

Answer 29

Receptors

Question 30

What is the role of the cerebellum?

Answer 30

It is involved in coordination and balance.

Question 31

Multiple choice: Which part of the brain is responsible for higher cognitive functions? A) Cerebellum B) Cerebrum C) Brainstem

Answer 31

B) Cerebrum

Question 32

What is the significance of the blood-brain barrier?

Answer 32

It protects the brain from harmful substances in the bloodstream.

Question 33

True or False: Hormones can have different effects on different target cells.

Answer 33

True

Question 34

Fill in the blank: The __________ system regulates short-term responses to stress.

Answer 34

nervous

Question 35

What is the primary function of the thyroid hormone?

Answer 35

To regulate metabolic rate.

Question 36

Multiple choice: Which gland regulates the sleep-wake cycle? A) Pineal gland B) Thyroid gland C) Adrenal gland

Answer 36

A) Pineal gland

Question 37

What is the effect of increased body temperature on sweat glands?

Answer 37

It stimulates sweat glands to produce sweat, which cools the body.

Question 38

True or False: Blood glucose levels are regulated by insulin and glucagon.

Answer 38

True

Question 39

Fill in the blank: The __________ is the part of the neuron that sends signals to other neurons.

Answer 39

axon

Question 40

What is the role of the corpus callosum?

Answer 40

It connects the left and right hemispheres of the brain.

Question 41

Multiple choice: Which of the following is a characteristic of the sympathetic nervous system? A) Rest and digest B) Fight or flight C) Energy conservation

Answer 41

B) Fight or flight

Question 42

What does an effector do?

Answer 42

It carries out the response to a stimulus.

Question 43

True or False: The pancreas secretes both insulin and glucagon.

Answer 43

True

Question 44

Fill in the blank: The __________ nervous system controls involuntary actions.

Answer 44

autonomic

Question 45

What is the function of the somatic nervous system?

Answer 45

It controls voluntary movements of skeletal muscles.

Question 46

Multiple choice: Which hormone is primarily involved in regulating sleep? A) Melatonin B) Cortisol C) Progesterone

Answer 46

A) Melatonin