MT Quiz 5

Question 1

Sarcoplasmis reticulum stores and releases what ion?

Answer 1

Calcium ions

Question 2

What type of athletes do you think would have more slow twitch fibers?

Answer 2

Endurance athletes

Question 3

A contraction where the muscle DOES NOT change?

Answer 3

Isometric

Question 4

Is actin or myosin part of the thin myofilament?

Answer 4

Actin

Question 5

What is the skeletal muscle contractile unit?

Answer 5

Sarcomere

Question 6

What is retinacula and where can you find it throughout the body?

Answer 6

Refers to any region on the body on the body in which tendon groups from different muscles pass under one connective tissue band.

Question 7

What is the ability of a muscle to shorten called?

Answer 7

Contract

Question 8

What does the epimysium do?

Answer 8

Fibrous tissue envelope that surrounds skeletal muscle. Layer of dense irregular connective tissue which ensheaths the entire muscle and protects muscles from friction against the other muscles and bones.

Question 9

What is a word describing muscle and fascia?

Answer 9

Fibrous

Question 10

What attaches muscle to bone?

Answer 10

Tendons

Question 11

The ability of a muscle to lengthen is called?

Answer 11

Extensibility

Question 12

What are motor end plates?

Answer 12

Neuromuscular junction

Question 13

What is the process of motor unit activation based on need called?

Answer 13

Recruitment

Question 14

What are red muscle fibers called?

Answer 14

Type 1/slow twitch

Question 15

What color are fast twitch fibers?

Answer 15

White

Question 16

What attachment is more movable?

Answer 16

insertion

Question 17

What is a single motor neuron and all muscle fibers to which it attaches?

Answer 17

Motor unit

Question 18

What does the golgi tendon organ do?

Answer 18

A proprioceptive sensory receptor organ that senses changes in muscle tension

Question 19

What does the muscle spindle do?

Answer 19

Stretch receptor within the body of a muscle that primarily detects changes in the length of the muscle.

Question 20

What is the sarcolemma?

Answer 20

Cell membrane

Question 21

What does tonus mean?

Answer 21

The constant low-level activity of a body tissue, especially muscle tone.

Question 22

What does biarticular mean?

Answer 22

Muscles that cross 2 joints rather than just 1 such as the hamstrings which cross both the hip and the knee.

Question 23

What is the principal neurotransmitter involved in muscle contraction?

Answer 23

Acetylcholine

Question 24

What is a spiral muscle?

Answer 24

Where certain fasciculi are crossed (traps, pec major)

Question 25

What is a pennate muscle?

Answer 25

Muscle with fascicles that attach obliquely (in a slanting position) to its tendon.

Question 26

Smooth muscle is

Answer 26

Voluntary

Question 27

Sprains are tears in

Answer 27

Ligaments

Question 28

What is active resisted movement?

Answer 28

Active movement of a body part with added resistance other than that provided by gravity. May be in the form of additional weight, body weight, manual resistance, provided by another individual, elastic resistance, etc.