Chapter 11- The Muscular System Flashcards Preview

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Flashcards in Chapter 11- The Muscular System Deck (44)
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The four types of muscles identified by different patterns of organization are...

Parallel, convergent, pennate, and circular

1

In a convergent muscle the muscle fibers are...

Based over a broad area, but all the fibers come together at a common attachment site

2

A first class level is one in which...

The fulcrum lies between the applied force and the resistance

3

The effect of an arrangement where a force is applied between the resistance and the fulcrum illustrates the principles operating...

Third class levers

4

The site where the movable end of a muscle attaches to bone or other connective tissue is referred to as the...

Insertion

5

A muscle whose contraction is chiefly responsible for producing a particular movement is called an...

Prime mover

6

Muscles are classified functionally as synergists when...

Their contraction is coordinated in a way that assists another muscle in affecting a particular movement

7

Extrinsic muscles are those that...

Position or stabilize an organ

8

The reason we use the word bicep to describe a particular muscle is because...

There are two tendons of origin

9

Which is included in the muscles of the facial expression?

Buccinator, orbicularis oris, risorius, occipitofrontalis

10

The muscles that bring the teeth together during mastication are the...

Temporalis, pterygoid, and masseter

11

The names of the muscles of the tongue are readily identified because their descriptive names end in...

Glossus

12

The superficial muscles of the spine are identified by subdivisions that include the...

Iliocostalis, longissimus, and spinalis

13

The muscles in the abdominal region that compress the abdomen, depress the ribs, and flex or bend the spine are the...

External obliques

14

The muscular floor of the pelvic cavity is formed by muscles that make up the...

Urogenital triangle and anal triangle

15

What is included in the only muscles that move the shoulder girdle?

Trapezius, serratus anterior, pectoralis minor, subclavius

16

What muscles only move the upper arm?

Deltoid, teres major, latissamus dorsi, pectoralis major

17

The muscles that arise on the humerus and the forearm and rotate the radius without producing either Flexion or extension of the elbow are the...

Pronator teres and supinator

18

The pectoralis major produces.........at the shoulder joint, and the latissamus dorsi muscle produces...........

Flexion; extension

19

The muscle groups that are responsible for movement of the thigh include the...

Adductor, gluteal, and lateral rotator

20

The flexors that move the lower leg, commonly known as the hamstrings, include the...

Biceps femoris, semimembranosus, and semitendinosus

21

The extensors that move the lower leg, commonly known as the quadriceps, include the...

Rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis

22

Major muscles that produce plantar Flexion involved with movement of the lower leg are the...

Gastrocnemius, soleus, and tibalis posterior

23

The actions that the arm muscles produce that are not evident in the action of the leg muscles are...

Pronation and supination

24

Common functional actions of the muscles of the forearm and the upper leg involve...

Flexion and extension

25

One of the effects of aging on the muscular system is...

Tolerance for exercise decreases

26

The number of satellite cells steadily decreases with age and the...

Amount of fibrous tissue increases

27

For all the body systems, the muscular system...

Generates heat that helps maintain normal body temperature

28

While the integumentary system helps the skin surface remove excess heat generated by muscle activity,............mechanisms are also coordinating responses to maintain homeostasis.

1. Respiratory
2. Nervous
3. Cardiovascular

29

The two factors that interact to determine the effects of individual skeletal muscle contraction are the...

Anatomical arrangement of the muscle fibers and the way the muscle attaches to the skeletal system