Question 1

What does homeostasis mean?

Accepted Answer

Keeping internal conditions in the body the same

Answer

Keeping external conditions of the body the same

Question 2

What things are regulated by homeostasis?

Accepted Answer

body temperature, control of blood glucose levels, water levels

Answer

movement, brain activity

Question 3

Homeostasis consists of sensing changes and responding to them using the nervous and hormonal systems.

Accepted Answer

true

Answer

false

Question 4

What is a stimulus?

Accepted Answer

A change in the environment

Answer

A respond to the environment

Question 5

What is an effector?

Accepted Answer

a muscle/gland which brings about a response to the stimulus it has received

Answer

a cell which detects changes in the internal/external environment

Question 6

What is a receptor?

Accepted Answer

a cell which detects changes in the internal/external environment

Answer

a muscle/gland which brings about a response to the stimulus it has received

Question 7

what are the receptors in our sense organs sensitive to?

Accepted Answer

receptors in eyes to light, receptors in ears to sound, receptors in tongue to chemicals in food, receptors in nose to chemicals in the air, receptors in the skin to pressure, touch and temperature.

Answer

receptors in eyes to sound, receptors in ears to light, receptors in tongue to chemicals in food, receptors in nose to chemicals in the air, receptors in the skin to pressure, touch and temperature.

Question 8

how do electrical impulses travel from one place of the body to another?

Accepted Answer

along neurones which make up nerves

Answer

along nerves which make up neurones

Question 9

what is the peripheral nervous system?

Accepted Answer

the nerves which branch out of the spinal cord

Answer

the brain and the spinal cord

Question 10

what is the central nervous system?

Accepted Answer

the brain and the spinal cord

Answer

the nerves which branch out of the spinal cord

Question 11

which neurone takes electrical impulses from the CNS to the effector?

Accepted Answer

motor neurone

Answer

relay neurone

Answer

sensory neurone

Question 12

which neurone takes electrical impulses from the receptor to the CNS?

Accepted Answer

sensory neurone

Answer

motor neurone

Answer

relay neurone

Question 13

which neurone takes electrical impulses around inside the CNS?

Accepted Answer

relay neurone

Answer

sensory neurone

Answer

motor neurone

Question 14

what do effectors do?

Accepted Answer

muscles contract / glands secrete hormones to bring about a response

Answer

glands contract / muscles secrete hormones to bring about a response

Question 15

what are some adaptations of neurones?

Accepted Answer

they have long axons along which electrical impulses travel, myelinated sheath to insulate and increase the speed of which electrical impulses travel, branched dendrites to make connections with other neurones

Answer

long and thin

Question 16

what is a reflex?

Accepted Answer

automatic and rapid responses which do not involve the conscious part of the brain to protect the organism

Answer

automatic and rapid responses which involve the conscious part of the brain to protect the organism

Question 17

What is a synapse?

Accepted Answer

neighbouring neurones do not touch each other, there is a small gap between them. To pass electrical impulses between neurones neurotransmitters (chemicals) must diffuse across the gap

Answer

neighbouring neurones do not touch each other, there is a small gap between them. To pass electrical impulses between neurones neurotransmitters (electrical messengers) must diffuse across the gap

Question 18

what is the normal pathway involving the nervous system?

Accepted Answer

stimulus --> receptor --> CNS --> effector

Answer

stimulus --> receptor --> sensory neurone --> relay neurone --> motor neurone --> effector --> response

Question 19

what is the reflex pathway?

Accepted Answer

stimulus --> receptor --> sensory neurone --> relay neurone --> motor neurone --> effector --> response

Answer

stimulus --> receptor --> CNS --> effector

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