Chapter 10 - Muscle Tissue

Question 1

Contraction of muscles is due to the movement of:

Answer 1

Microfiliments

Question 2

Surrounds a fascicle:

Answer 2

Perimysium

Question 3

Surrounds a muscle fiber:

Answer 3

Endomysium

Question 4

Surrounds the epimysium?

Answer 4

Fascia (fascicle)

Question 5

Surrounds the entire skeletal muscle?

Answer 5

Epimysium

Question 6

Attaches muscle to bone?

Answer 6

Tendon

Question 7

Tendons that form flattened sheets?

Answer 7

aponeuroses

Question 8

The functions of muscles:

Answer 8

Produce movement, maintain posture, stabilize joints, generate heat

Question 9

Specialized smooth endoplasmic reticulum?

Answer 9

Sarcoplasmic reticulum

Question 10

Specialized plasma membrane of muscle?

Answer 10

Sarcolemma

Question 11

Helps stimulate and coordinate muscle contraction?

Answer 11

Transverse tubules

Question 12

Bundles of myofilaments?

Answer 12

myofibril

Question 13

Contractile unit of a muscle fiber?

Answer 13

Sarcomere

Question 14

Thick filaments are made up of this protein?

Answer 14

Myosin

Question 15

Thin filaments are made up of this protein?

Answer 15

Actin

Question 16

The I band is composed of _____ filaments.

Answer 16

Thin

Question 17

The Z line links _______ filaments.

Answer 17

Thin

Question 18

The A band is composed of _____filaments.

Answer 18

Thick

Question 19

The M line links ______ filaments.

Answer 19

Thick

Question 20

Myosin heads attach to binding sites on think filaments because of an activation by a:

Answer 20

Nerve

Question 21

A muscle contracts by changing length by:

Answer 21

Shortening

Question 22

The ability of a muscle to shorten when stimulated?

Answer 22

Contractility

Question 23

The ability to receive and respond when stimulated?

Answer 23

Irritability

Question 24

Association site of nerve and muscle?

Answer 24

Neuromuscular junction

Question 25

Gap between the nerve and muscle?

Answer 25

Synaptic cleft

Question 26

A neurotransmitter attaches to receptors on the?

Answer 26

Sarcolemma

Question 27

Chemical released by nerve after nerve impulse?

Answer 27

Neurotransmitter

Question 28

The neurotransmitter for skeletal muscle is?

Answer 28

ACH

Question 29

This element rushing into the cell generates an action potential?

Answer 29

Sodium

Question 30

The muscle force depends upon the number of ______ stimulated.

Answer 30

Fibers

Question 31

Contractions in which the muscle is unable to shorten because the tension increases?

Answer 31

Isometric

Question 32

Contractions in which the muscle shortens because myofilaments are able to slide past each other during contractions?_

Answer 32

Isotonic

Question 33

The ability of some fibers to be contracted even in a relaxed muscle creates?

Answer 33

Muscle tone

Question 34

Attachment to an immovable bone is the?

Answer 34

Origin

Question 35

Attachment to a moveable bone is the?

Answer 35

Insertion

Question 36

Muscle type that stabilizes joints during contraction creating an immovable base?

Answer 36

Fixators

Question 37

Muscle type that is responsible for a certain movement?

Answer 37

Prime mover (agonist)

Question 38

Muscle type that aids a prime mover and prevents rotation?

Answer 38

Synergist

Question 39

Muscle type that opposes or reverses a prime mover?

Answer 39

Antagonist