muscles 2

Question 1

A synapse between a skeletal muscle cell and a motor neuron is called a _____

Answer 1

neuromuscular junction

Question 2

A single axon of a motor nerve can innervate up to 200 muscle fibers by branching into many _____

Answer 2

axon terminals.

Question 3

The distal tip of each axon terminal forms clusters of

Answer 3

synaptic end-bulbs

Question 4

synaptic end-bulbs contain vesicles of a neurotransmitter called _____

Answer 4

acetylcholine.

Question 5

The skeletal muscle fiber cell membrane is specialized in this region and is termed a ____

Answer 5

motor end plate

Question 6

acetylcholine released into the synaptic cleft is broken down very quickly by the enzyme ____

Answer 6

acetylcholinesterase

Question 7

_____the contraction cycle of the sliding of filaments

Answer 7

Contraction -

Question 8

_______for the active transport of calcium ions back into the sarcoplasmic reticulum at rest

Answer 8

Active Transport Pumps -

Question 9

_____ refers to the firmness of a skeletal muscle in a relaxed state

Answer 9

Muscle tone

Question 10

Some neurological disorders result in _____ or hypotonia

Answer 10

flaccid paralysis

Question 11

______the contraction cycle of the sliding of filaments

Answer 11

Contraction -

Question 12

for the active transport of calcium ions back into the sarcoplasmic reticulum at rest

Answer 12

Active Transport Pumps -

Question 13

is a recording of the contraction of all the muscle cells in a motor unit

Answer 13

A myogram