chapter 5 nervous skeletal muscular system

Question 1

Glucose that is deposited and stored in bodily tissues, such as the liver and muscle cells; the storage form of carbohydrate

Answer 1

glycogen

Question 2

Protein-based molecule that carries oxygen molecules into the muscles

Answer 2

myoglobin

Question 3

The contractile components of a muscle cell; the myofilaments (actin and myosin) are contained within a myofibril.

Answer 3

myofibrils

Question 4

The filaments of a myofibril; include actin and myosin.

Answer 4

myofilaments

Question 5

The thin, stringlike, myofilament that acts along with myosin to produce muscular contraction.

Answer 5

actin

Question 6

The thick myofilament that acts along with actin to produce muscular contraction.

Answer 6

myosin

Question 7

The structural unit of a myofibril composed of actin and myosin filaments between two Z-lines.

Answer 7

sarcomere

Question 8

the meeting point of each sarcomere

Answer 8

z line

Question 9

The nervous system’s signal that tells a muscle to contract

Answer 9

neural activation

Question 10

The specialized site where the nervous system communicates directly with muscle fibers.

Answer 10

neuromuscular junction

Question 11

A junction or small gap between the motor neuron and muscle cells

Answer 11

synapse

Question 12

Nerve impulse that is relayed from the central nervous system, through the peripheral nervous system, and into the muscle across the neuromuscular junction.

Answer 12

action potential

Question 13

Chemical messengers that cross the synapse between neuron and muscle and assist with nerve transmission.

Answer 13

neurotransmitters

Question 14

The myosin heads bind to actin and pull them toward the sarcomere center, which slides the filaments past each other, shortening the muscle.

Answer 14

power stroke

Question 15

The smallest blood vessels and the site of exchange of elements between the blood and the tissues.

Answer 15

capillaries