Question 1

The three types of muscle are?

Accepted Answer

1. Skeletal (striated) muscle.
2. Smooth (visceral) muscle.
3. Cardiac muscle.

Question 2

Skeletal (striated) muscles are?

Accepted Answer

voluntary.

Question 3

Examples of skeletal (striated) muscles include?

Accepted Answer

1. Biceps brachii (flexes inferior arm.)
2. Triceps brachii (extends inferior arm).

Question 4

Most voluntary and skeletal muscles are connected to a bone by a strong, tough, nonelastic, white collagenous fibrous cord known as a?

Accepted Answer

tendon.

Question 5

Smooth (visceral) muscles are?

Accepted Answer

involuntary (autonomic).

Question 6

Examples of smooth (visceral) muscle are found in the?

Accepted Answer

GI tract (peristalsis), uterus, blood vessels (vasoconstriction and vasodilation), and the urinary bladder.

Question 7

Cardiac muscle is?

Accepted Answer

involuntary.

Question 8

Cardiac muscle is unique because when one cardiac muscle cell is stimulated?

Accepted Answer

all the cardiac muscle cells are stimulated.

Question 9

This causes the cardiac muscles cells to?

Accepted Answer

contract together.

Question 10

Cardiac muscle cells also have the unique ability to?

Accepted Answer

receive an impulse, contract, immediately relax, and then receive another impulse.

Question 11

A steady or constant state of partial contraction maintained in a muscle is called?

Accepted Answer

muscle tone.

Question 12

Some muscle cells in a muscle will always be contracting while other muscle cells?

Accepted Answer

are at rest.

Question 13

Then those at rest will contract while those that were contracting will go into?

Accepted Answer

relaxation.

Question 14

This allows us to maintain body posture by?

Accepted Answer

long periods of time without tiring.

Question 15

This is accomplished because nerve impulses?

Accepted Answer

alternate between various groups of muscle cells thus allowing all to have periods of rest.

Question 16

Two types of muscle contraction include?

Accepted Answer

1. Isotonic
2. Isometric.

Question 17

Isotonic contractions occur when?

Accepted Answer

lifting a weight, muscles become shorter and thicker and the tone (tension) remains the same.

Question 18

Isometric contractions occur when?

Accepted Answer

pushing against a wall, the muscles involved remain at a constant length and the tone (tension)against the muscle increases.

Question 19

The more fixed attachment of a muscle that serves as a basis for the action is the?

Accepted Answer

origin (anchor).

Question 20

The movable attachment where the effects of muscular contraction are seen, is called the?

Accepted Answer

insertion (action)

Question 21

Muscles can be named according to their action such as?

Accepted Answer

1. Adductor (movement of a limb toward the midline of the body).
2. Abductor (movement of a limb away from the midline of the body).
3. Flexor (bending a limb at a joint).
4. Extensor (extending a limb at a joint).

Question 22

Muscles can be named according to their shape such as?

Accepted Answer

1. Quadratus (square).
2. Trapezius (triangular).

Question 23

Muscles can be named according to their origin and insertion such as the?

Accepted Answer

sternocleidmastoid.

Question 24

Sternocleidmastoid muscles are primarily used to?

Accepted Answer

move the head.

Question 25

Muscles can be named according to their location such as?

Accepted Answer

1. Frontailis
2. Tibialis.
3. Radialis.

Question 26

The frontalis muscles?

Accepted Answer

raises your eyebrows.

Question 27

Muscles can be named according to the number of divisions such as?

Accepted Answer

1. Biceps brachii.
2. Triceps brachii.
3. Quadriceps.

Question 28

Muscles can be named according to the direction their fibers such as?

Accepted Answer

transverse or oblique (slanted)

Question 29

Muscles that rotate a limb are called?

Accepted Answer

rotators (pitchers).

Question 30

Movement of the foot upward is called?

Accepted Answer

dorsiflexion.

Question 31

Movement of the foot toward the ground is called?

Accepted Answer

plantar flexion.

Question 32

Turning the palm so that is faces the ground is called?

Accepted Answer

pronation.

Question 33

The two muscles that cause your palm to face downward are called the?

Accepted Answer

pronator teres and pronator quadratus.

Question 34

Turning the palm upwards is called?

Accepted Answer

supination.

Question 35

The muscle that causes your palm to face upward is called the?

Accepted Answer

supinator muscle (waitress)

Question 36

The muscle that draws the scalp backwards is called the?

Accepted Answer

occipitalis.

Question 37

The muscles involved in smiling and laughing are called?

Accepted Answer

zygomaticus.

Question 38

The muslces that close the jaw are the?

Accepted Answer

masseter and temporalis.

Question 39

The muscles that move the scapula include the?

Accepted Answer

1. Levator scapulae (shrug).
2. Rhomboids.
3. Pectoralis minor.
4. Trapezius.

Question 40

The muscle that flexes and adducts the arm is called the?

Accepted Answer

pectoralis major.

Question 41

The muscle that extends, adducts, and rotates the arm medially (swimming) is called the?

Accepted Answer

latissimus dorsi.

Question 42

The muscle that abducts the arm and is a site for intramuscular (IM) injections is called the?

Accepted Answer

deltoid.

Question 43

The muscle that flexes the wrist is called the?

Accepted Answer

flexor carpi.

Question 44

The muscle that extends the wrist is called the?

Accepted Answer

extensor carpi.

Question 45

The muscles that flex the fingers or toes are called?

Accepted Answer

flexor digitora.

Question 46

The muscles that extend the fingers or toes are called?

Accepted Answer

extensor digitora.

Question 47

The muscle that flexes the thumb is called the?

Accepted Answer

flexor pollicis (text messaging).

Question 48

The muscle that extends the thumb is called the?

Accepted Answer

extensor pollicis (hitch hike).

Question 49

The muscle that moves the thumb toward midline is called the?

Accepted Answer

adductor pollicis.

Question 50

The muscle that moves the thumb away from the midline is called the?

Accepted Answer

abductor pollicis.

Question 51

The muscle that flexes and opposes the thumb and is used when we write is called the?

Accepted Answer

opponens pollicis (opposition).

Question 52

The muscles that make up the abdominal wall include?

Accepted Answer

1. External oblique.
2. Internal oblique.
3. Transversus abdominis.
4. Rectus abdominis ("washboard").

Question 53

The muscles of ventilation includes?

Accepted Answer

1. Diaphragm.
2. Internal intercostals.
3. External intercostals.

Question 54

The muscles of the buttocks include?

Accepted Answer

1. Gluteus maximus (cheek).
2. Gluteus minimus.
3. Gluteus medius (IM injections).

Question 55

The muscles that flex the knee include?

Accepted Answer

1. Biceps femoris.
2. Semitendiousus.
3. Semimembranosus.
4. Popliteus.
5. Gracilis.
6. Sartorius.

Question 56

The biceps femoris, semitendinosus, and semimembranosus, make up the?

Accepted Answer

"hamstrings."

Question 57

The muscles that extend the knee include?

Accepted Answer

1. Rectus femoris.
2. Vastus lateralis (IM injections).
3. Vastus medialis.
4. Vastus intermedius.

Question 58

The rectus femoris, vastus lateralis, vastus medials  and vastus intermedius make up the?

Accepted Answer

quadriceps femoris group.

Question 59

The five muscles that plantar flex the foot (bring it downward) include?

Accepted Answer

1. Gastrocemius (calf).
2. Tibialis posterior.
3. Soleus.
4. Peroneus longus.
5. Plantaris.

Question 60

Two muscles dorisflex the foot (bring it upward) include?

Accepted Answer

1. Tibialis anterior.
2. Peroneus tertius.

Question 61

Humans have ______ skeletal muscles.?

Accepted Answer

650.

Question 62

If all the skeletal muscles worked together, they could lift?

Accepted Answer

11 tons.

Muscular System 3

fundamentals of body structure

Question	Answer
The three types of muscle are?	1. Skeletal (striated) muscle. 2. Smooth (visceral) muscle. 3. Cardiac muscle.
Skeletal (striated) muscles are?	voluntary.
Examples of skeletal (striated) muscles include?	1. Biceps brachii (flexes inferior arm.) 2. Triceps brachii (extends inferior arm).
Most voluntary and skeletal muscles are connected to a bone by a strong, tough, nonelastic, white collagenous fibrous cord known as a?	tendon.
Smooth (visceral) muscles are?	involuntary (autonomic).
Examples of smooth (visceral) muscle are found in the?	GI tract (peristalsis), uterus, blood vessels (vasoconstriction and vasodilation), and the urinary bladder.
Cardiac muscle is?	involuntary.
Cardiac muscle is unique because when one cardiac muscle cell is stimulated?	all the cardiac muscle cells are stimulated.
This causes the cardiac muscles cells to?	contract together.
Cardiac muscle cells also have the unique ability to?	receive an impulse, contract, immediately relax, and then receive another impulse.
A steady or constant state of partial contraction maintained in a muscle is called?	muscle tone.
Some muscle cells in a muscle will always be contracting while other muscle cells?	are at rest.
Then those at rest will contract while those that were contracting will go into?	relaxation.
This allows us to maintain body posture by?	long periods of time without tiring.
This is accomplished because nerve impulses?	alternate between various groups of muscle cells thus allowing all to have periods of rest.
Two types of muscle contraction include?	1. Isotonic 2. Isometric.
Isotonic contractions occur when?	lifting a weight, muscles become shorter and thicker and the tone (tension) remains the same.
Isometric contractions occur when?	pushing against a wall, the muscles involved remain at a constant length and the tone (tension)against the muscle increases.
The more fixed attachment of a muscle that serves as a basis for the action is the?	origin (anchor).
The movable attachment where the effects of muscular contraction are seen, is called the?	insertion (action)
Muscles can be named according to their action such as?	1. Adductor (movement of a limb toward the midline of the body). 2. Abductor (movement of a limb away from the midline of the body). 3. Flexor (bending a limb at a joint). 4. Extensor (extending a limb at a joint).
Muscles can be named according to their shape such as?	1. Quadratus (square). 2. Trapezius (triangular).
Muscles can be named according to their origin and insertion such as the?	sternocleidmastoid.
Sternocleidmastoid muscles are primarily used to?	move the head.
Muscles can be named according to their location such as?	1. Frontailis 2. Tibialis. 3. Radialis.
The frontalis muscles?	raises your eyebrows.
Muscles can be named according to the number of divisions such as?	1. Biceps brachii. 2. Triceps brachii. 3. Quadriceps.
Muscles can be named according to the direction their fibers such as?	transverse or oblique (slanted)
Muscles that rotate a limb are called?	rotators (pitchers).
Movement of the foot upward is called?	dorsiflexion.
Movement of the foot toward the ground is called?	plantar flexion.
Turning the palm so that is faces the ground is called?	pronation.
The two muscles that cause your palm to face downward are called the?	pronator teres and pronator quadratus.
Turning the palm upwards is called?	supination.
The muscle that causes your palm to face upward is called the?	supinator muscle (waitress)
The muscle that draws the scalp backwards is called the?	occipitalis.
The muscles involved in smiling and laughing are called?	zygomaticus.
The muslces that close the jaw are the?	masseter and temporalis.
The muscles that move the scapula include the?	1. Levator scapulae (shrug). 2. Rhomboids. 3. Pectoralis minor. 4. Trapezius.
The muscle that flexes and adducts the arm is called the?	pectoralis major.
The muscle that extends, adducts, and rotates the arm medially (swimming) is called the?	latissimus dorsi.
The muscle that abducts the arm and is a site for intramuscular (IM) injections is called the?	deltoid.
The muscle that flexes the wrist is called the?	flexor carpi.
The muscle that extends the wrist is called the?	extensor carpi.
The muscles that flex the fingers or toes are called?	flexor digitora.
The muscles that extend the fingers or toes are called?	extensor digitora.
The muscle that flexes the thumb is called the?	flexor pollicis (text messaging).
The muscle that extends the thumb is called the?	extensor pollicis (hitch hike).
The muscle that moves the thumb toward midline is called the?	adductor pollicis.
The muscle that moves the thumb away from the midline is called the?	abductor pollicis.
The muscle that flexes and opposes the thumb and is used when we write is called the?	opponens pollicis (opposition).
The muscles that make up the abdominal wall include?	1. External oblique. 2. Internal oblique. 3. Transversus abdominis. 4. Rectus abdominis ("washboard").
The muscles of ventilation includes?	1. Diaphragm. 2. Internal intercostals. 3. External intercostals.
The muscles of the buttocks include?	1. Gluteus maximus (cheek). 2. Gluteus minimus. 3. Gluteus medius (IM injections).
The muscles that flex the knee include?	1. Biceps femoris. 2. Semitendiousus. 3. Semimembranosus. 4. Popliteus. 5. Gracilis. 6. Sartorius.
The biceps femoris, semitendinosus, and semimembranosus, make up the?	"hamstrings."
The muscles that extend the knee include?	1. Rectus femoris. 2. Vastus lateralis (IM injections). 3. Vastus medialis. 4. Vastus intermedius.
The rectus femoris, vastus lateralis, vastus medials and vastus intermedius make up the?	quadriceps femoris group.
The five muscles that plantar flex the foot (bring it downward) include?	1. Gastrocemius (calf). 2. Tibialis posterior. 3. Soleus. 4. Peroneus longus. 5. Plantaris.
Two muscles dorisflex the foot (bring it upward) include?	1. Tibialis anterior. 2. Peroneus tertius.
Humans have ______ skeletal muscles.?	650.
If all the skeletal muscles worked together, they could lift?	11 tons.

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