Muscular

Question 1

Which of these muscles is NOT a fixator of the scapula?

Answer 1

Latissimus dorsi

Question 2

Acetylcholine

Answer 2

All of the choices are correct

Question 3

Muscles are named according to their:

Answer 3

All of the choices are correct

Question 4

If someone winks at you, they are using their:

Answer 4

orbicularis oculi

Question 5

The____is the smooth ER of a muscle fiber and stores calcium ions.

Answer 5

Sarcoplasmic Reticulum

Question 6

The major abductor of the upper limb is the

Answer 6

deltoid

Question 7

Contractibility is the ability of skeletal muscle to

Answer 7

shorten with force

Question 8

The ___is attached to bones via tendons.

Answer 8

Whole skeletal muscle

Question 9

The correct structural arrangement from macro to micro in terms of size

Answer 9

Myofilament, muscle cells, myofibrils, sarcomere

Question 10

Which of the following statements is FALSE?

Answer 10

During muscle contraction, the actual length of the actin and myosin molecules changes.

Question 11

The___is the functional unit of skeletal muscle because it is the
smallest portion of the skeletal muscle capable of__

Answer 11

sarcomere; contracting

Question 12

Muscles that work together to cause movement are called

Answer 12

synergist

Question 13

After death, when the body becomes stiff due to unreleased muscle contraction, the condition is referred to as:

Answer 13

Rigor Mortis

Question 14

Cardiac muscle

Answer 14

is under involuntary control

Question 15

A___is a single muscle cell.

Answer 15

Muscle fiber

Question 16

All of the following are functions of the muscular system except:

Answer 16

Information Processing

Question 17

Arrange the following events in the correct order that they occur during skeletal muscle contraction.
1) Calcium ions move along their concentration gradient.
2) Action potential occurs in cell membrane.
3) Ion channels open in sarcoplasmic reticulum.
4) Action potential moves along T tubules.
5) Actin to myosin cross-bridges form.

Answer 17

2,4,3,1,5

Question 18

Which of the following muscles is under voluntary control?

Answer 18

Skeletal

Question 19

The anterior hip muscle that flexes the thigh is the

Answer 19

iliopsoas

Question 20

The primary muscle(s) responsible for elevating the ribs during inspiration is/are

Answer 20

The external Intercostal

Question 21

For any given movement, the
major role in the desired movement.

Answer 21

prime mover

Question 22

The___is a group of muscle fibers surrounded by perimysium

Answer 22

muscle fascicle

Question 23

Smooth muscle *

Answer 23

all of the choices are correct

Question 24

The muscle that works in opposition to another muscle is the

Answer 24

antagonist

Question 25

The specific molecules that provide calcium-binding sites on actin are
molecules.

Answer 25

troponin

Question 26

The hip muscle commonly used as a site for injection as this is the safest *1/1 for adults and children is the

Answer 26

gluteus medius

Question 27

An anterior thigh muscle that extends the leg is the

Answer 27

quadricep femoris

Question 28

Which of the following muscles are used to elevate the larynx?

Answer 28

hyoid muscle

Question 29

Connective tissue that surrounds the fasciculi is called

Answer 29

perimysium

Question 30

The___muscles help to move and make up the wall of the chest and are located between the ribs.

Answer 30

intercostal muscle