A.1.1.1 (NS)

Question 1

Central Nervous System (CNS)

Answer 1

Brain + Spinal Cord

Question 2

Peripheral Nervous System (PNS)

Answer 2

Nerves

Question 3

Afferent neurons

Answer 3

Picks up information and sends to brain (sensation)

Question 4

Efferent neurons

Answer 4

Sends information from brain to muscle (responses)

Question 5

Autonomic NS

Answer 5

Involuntary responses

Question 6

Somatic NS

Answer 6

Thought-out responses

Question 7

Sympathetic NS

Answer 7

Fight or flight (speeds things up)

Question 8

Parasympathetic NS

Answer 8

Slows things down

Question 9

Breathing/Ventilation

Answer 9

Afferent: chemoreceptors in the medulla oblongata
CNS: chemoreceptors sends more action potential to the respiratory center in the pons
Efferent: CNS tells diaphragm
*autonomic&sympathetic

Question 10

Temperature

Answer 10

Afferent: thermoreceptors all around the body
CNS: thermoreceptors tells hypothalamus
Efferent: CNS tells body (vasodilation, vasoconstriction)

Question 11

Blood pressure

Answer 11

Afferent: baroreceptors in the aortic arch and carotid arteries
CNS: baroreceptors tells medulla oblongata
Efferent: CNS tells blood vessels (vasodilation, vasoconstriction)

Question 12

Heart rate

Answer 12

*heart has intrinsic excitation abilities (SA node creates its own electrical signals=automaticity)
SA node->Bachmann’s bundle->AV node->bundle of His->Purkinje fibers->pulmonary artery OR aorta