Cardiovascular Anatomy-----Nerve supply of the heart

Question 1

the “circuit box” for the heart is called the ________________________________

Answer 1

cardiac plexus

Question 2

(1) the cardiac plexus is located near the arch of the __________
(2) it consists of _____________________ and parasympathetic fibers

Answer 2

aorta

sympathetic

Question 3

Fibers from the cardiac plexus accompany the right and left coronary ________________ to enter the heart

Answer 3

arteries

Question 4

Most fibers end in the _________________ the remaining fibers end in the ____ node

Answer 4

SA node

AV

Question 5

Sympathetic nerves of the heart act like an accelerator to increase heart rate (they use _____________________________ as the neurotransmitter)

Answer 5

norepinephrine

Question 6

_____________________ nerves of the heart

(1) come from the _______________ nerve
(2) ____________ the heart down
(3) use _____________________________ as the NT

Answer 6

Parasympathetic
vagus
slow
acetylcholine