control and communication

Question 1

what does the human nervous system consist of

Answer 1

the brain
the spinal cord
the nerves

Question 2

what makes up the central nervous system (CNS)

Answer 2

the brain
the spinal cord

Question 3

how is the CNS connected to all parts of the body

Answer 3

by the nerves

Question 4

what are the 3 parts of the brain

Answer 4

the cerebellum
the cerebrum
the medula

Question 5

what is the function of the cerebellum

Answer 5

controls balance
muscular co-ordination

Question 6

what is the function of the cerebrum

Answer 6

responsible for mental processes

Question 7

what is the function of the medulla

Answer 7

controls the rate of breathing
heart beat/ rate

Question 8

what are the nerve cells made up of

Answer 8

neurons

Question 9

what are the three types of neurons

Answer 9

sensory
inter
motor

Question 10

what is the function of a sensory neuron

Answer 10

passes information to the CNS from the bodys receptors

Question 11

what is the function of an inter neuron

Answer 11

operate within the CNS processing information from the senses that require a response

Question 11

what is the function of an motor neuron

Answer 11

enable a response to occur at an effector (muscle or gland)

Question 12

what is a synapse

Answer 12

a tiny space that occurs between the axon ending of one neuron and the sensory fiber of the next

Question 13

what is a reflex

Answer 13

it is a rapid and automatic reaction that occurs to protect the body from harm

Question 14

what is the reflex arc

Answer 14

stimuli-> receptor-> sensor neuron-> CNS-> motor neuron-> effector muscles-> responses

Question 15

what does an endocrine gland do

Answer 15

releases hormones into the bloodstream

Question 16

what is a hormone

Answer 16

chemical messenger that travels into the bloodstream to their target tissue

Question 17

what is a target tissue

Answer 17

a cell with complementary receptor proteins for specific hormones

Question 18

why would blood glucose levels become high

Answer 18

if sugary foods have been eaten

Question 19

how does the pancreas respond to the blood glucose levels rising

Answer 19

it responds by producing the hormone insulin

Question 20

what does the insulin do

Answer 20

converts the excess glucose into glycogen

Question 21

where can glycogen be stored

Answer 21

in the liver

Question 22

what happens when the glycogen is removed from the blood

Answer 22

the blood sugar levels return to normal

Question 23

when would blood glucose levels drop

Answer 23

after physical activity or a period of no eating

Question 24

what organ detects a change when blood glucose levels drop

Answer 24

the pancreas