Quiz 4

Question 1

What are the 3 layers of connective tissue that surrounds part of the skeletal muscle

Answer 1

Endomysium, Epimysium, and Fascia

Question 2

Tendons attach skeletal muscles to articulating bones via the —— point on the relatively “moveable” bone and the —— point on the relatively “fixed/stable” bone.

Answer 2

Insertion, origin

Question 3

Skeletal muscle fibers are organized into basic functional units called

Answer 3

Sacromeres

Question 4

There are dozens to several hundred myofibrils in each

Answer 4

Muscle fiber

Question 5

Skeletal muscle is the only muscle

Answer 5

Striated

Question 6

When a myosin head moves the actin toward the center of the sacromere, this is called the

Answer 6

Power stroke

Question 7

True or False: Mechanical events always precede electrical events when it relates to muscular contractions

Answer 7

False

Question 8

A single motor neuron and all the muscle fibers that is innervates is referred to as a

Answer 8

Motor unit

Question 9

Eccentric

Answer 9

Extending the muscle, expanding

Question 10

Concentric

Answer 10

Shortening a muscle

Question 11

Isometric

Answer 11

No change in the muscle

Question 12

What stimulates skeletal muscle to contract?

Answer 12

Signals from the nervous system

Question 13

What component is considered significant for a myofibril

Answer 13

Tropomyosin, Troponin, Actin, and Myosin

Question 14

Skeletal muscle fibers are organized into basic functional units called

Answer 14

Myofibrils

Question 15

Shortening of the sacromere during a contraction simply means that the —— are getting closer to one another

Answer 15

Z line/disks