NS and ES

Question 1

nervous system

Answer 1

a network of cells in the human body that is our primary internal communication system

Question 2

central nervous system (CNS)

Answer 2

made up of the brain and spinal cord.

Question 3

the brain

Answer 3

the brain is the centre of all conscious awareness. the outer layer of the brain is highly developed

Question 4

spinal cord

Answer 4

an extension of the brain. responsible for reflex actions such as pulling your hands away from a hot plate

Question 5

peripheral nervous system (PNS)

Answer 5

transmits messages via millions of neurons to and from the CNS. it is sub divided into 2 sub sections. ANS and SNS

Question 6

autonomic nervous system (ANS)

Answer 6

controls vital functions. such as breathing and heart rate

Question 7

somatic nervous system (SNS)

Answer 7

controls muscle movement and receives info via sensory receptors

Question 8

endocrine system

Answer 8

instructs glands to release hormones into the bloodstream. they are carried towards target organs

Question 9

gland

Answer 9

a gland is an organ in the body that synthesises hormones. the piturity gland and the pancreas for example

Question 10

fight or flight response

Answer 10

a stressor occurs, and the ANS changes from the resting state (parasynthetic) to the aroused state (sympathetic). the piturity gland then releases the ACTH hormone, this effects the adrenal glands, causing them to release adrenaline, which can increase breathing or heart rate