MOD - COURSE 1 - PT 7 - NERVOUS SYSTEM

Question 1

WHAT MAKES UP TEH NERVOUS SYSTEM

Answer 1

CNS
PNS

Question 2

what is the CNS

Answer 2

brain and spinal cord
(dorsal cavity, cranial cavity and spinal cavity)

Question 3

what is the function of brain

Answer 3

interprets - evaulates info- stimuli and direct response

Question 4

what 3 structures make up the brain

Answer 4

cerebrum
cerebellum
brain stem

Question 5

what is the function of the cerebellum

Answer 5

• base of head
• autonomic program i.e. walking
• posture and coordination
• eye, limbs, head movement
• motor
• involved in language and cognitive

Question 6

cerebrum function…

Answer 6

• left and right hemisphere
• frontal, paietal and occipital lobe
• cerebral cortex - conscious thought
  white matter - communication between cortex
• corpus callosum - connect hemisphere
• hippocampus - short an dlong term memory - spatial navigation
• amyglada - process memory - emotion
• basal ganglia - coordination - voluntary movement

Question 7

brain stem function….

Answer 7

• brain connect to spiinal cord
• 3 structure: - pons, medulla and midbrain
• medulla - extensions of spinal cord - control blood pressure and breathing
• pons - regulate breathing, sleep and taste
• midbrain - above pons - inclue nuclei - link distinct part of motor system

Question 8

whats the peripheral nervous system

Answer 8

• nerves along body - ganglia - cluster of neurons
• PNS - connect CNS to limbs and organs
• somatic and autonomic NS

Question 9

what is the somatic NS

Answer 9

• voluntary control of skeletal muscle - effeerent nerve - stimulates muscle - contraction - non sensory neruones connect msuscle with skin

Question 10

what neurotransmitter is released by neurones of the SOMATIC NS

Answer 10

ACETYLCHOLINE

Question 11

what is the function of the autonomic NS

Answer 11

involuntary and visceral

Question 12

how can you catagorise the autonomic NS

Answer 12

• sympathetic NS and parasympathetic NS

Question 13

sympathetic NS - function?

Answer 13

hormonal and neuronal stress- flight ot fight

Question 14

what glands = assocaited with sympathetic NS - what do they produce

Answer 14

adrenal glands - produce catecholamines

Question 15

what are the 2 types of sympathetic NS neurons

Answer 15

• pregnaglionic neurons
• post ganglionic

Question 16

what is the pre-ganglionic neuone and what does it release

Answer 16

• located in the spinal cord to gnaglion
• releases acetylcholine
• short

Question 17

what os the post-ganglionic neurone

Answer 17

located - ganglion to viscera #released catcholamines - noradrenaline and adrenaline

Question 18

what affect does the sympathetic NS have on the eye

Answer 18

dilate pupil

Question 19

what affect does the sympathetic NS have on the heart

Answer 19

increases rate and force of contraction

Question 20

what affect does the sympathetic NS have on the lungs

Answer 20

• dilate bronchioles

Question 21

what affect does the sympathetic NS have on the bloof vessels

Answer 21

constricts

Question 22

what affect does the sympathetic NS have on the sweat glands

Answer 22

activate sweat secretion

Question 23

what affect does the sympathetic NS have on the digestive tract

Answer 23

inhibits peristalsis

Question 24

what affect does the sympathetic NS have on the kidney

Answer 24

increases renin secretion

Question 25

what os the parasympathetic NS and what does it do?

Answer 25

complementary to the SNS - - stimulates rest and digest activites - when body = rest - i.e. eating, salvaiton ,sex arousal

Question 26

what affect does the parasympathetic NS have on the eye

Answer 26

pupil constriction

Question 27

what affect does the parasympathetic NS have on the heart

Answer 27

decrease rate an dforce of contraction

Question 28

what affect does the parasympathetic NS have on the lung

Answer 28

bronchial msucle contracted

Question 29

what affect does the parasympathetic NS have on the blood vessels

Answer 29

dilate - decrease blood pressure

Question 30

what affect does the parasympathetic NS have on the glands

Answer 30

saliva and mucous increase

Question 31

what affect does the parasympathetic NS have on the digestic tract

Answer 31

activates digestive motility

Question 32

what affect does the parasympathetic NS have on the kidney

Answer 32

increased urine secretion