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Anatomy & Physiology Lab > Lab 7 Terms > Flashcards

Lab 7 Terms Flashcards

1
Q

What are the types of skeletal muscles?

A

Parallel
Convergent
Pennate
Circular

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2
Q

The fascicles are parallel to the long axis of the muscle. They are generally long strap like muscles that can generate much force. The strongest of these muscles are fusiform in shape, that is, they are wide in the middle and taper at each end. Ex: rectus abdominal and the biceps brachii

A

Parallel

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3
Q

These are fan-like muscles. The fascicles are broad at the origin and taper to a narrow insertion. This arrangement functions to concentrate the force of the muscle contraction into a small area.
Ex: pectoralis major

A

Convergent

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4
Q

The fascicles are attached to a tendon in a feather-like manner. The tendon is the shaft of the feather and the fascicles are the vane of the feather.

A

Pennate

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5
Q

Three types of pennate

A

Unipennate
Bipennate
Multipennate

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6
Q

Type of pennate muscle that are attached to one side of the tendon, ex: extensor digitorum

A

Unipennate

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7
Q

Type of pennate muscle that are attached to both sides of the tendon, ex: rectus femoris

A

Bipennate

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8
Q

Type of pennate muscle where the fascicles converge on a branching tendon, ex: deltoid

A

Multipennate

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9
Q

These are sphincter muscles. The fascicles surround an opening. The action of the muscle increases or decreases the diameter of the opening. Ex: orbicularis oculi

A

Circular

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10
Q

When the occipital is contracted, this muscle raises the eyebrows and wrinkles the skin of the forehead. When the occipital is is relaxed, it draws the skin anteriorly.

A

Frontalis

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11
Q

It pulls the skin on the face posteriorly.

A

Occipitalis

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12
Q

Together they extend the head by flexing the cervical portion of the vertebral column. Alone they turn the head in the direction opposite of the contraction.

A

Sternocleicomastoid

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13
Q

Acts with the masseter to raise and pull back the mandible.

A

Temporalis

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14
Q

Raises and lowers the lower mandible, closes the mouth, and clenches the teeth. It also may move the mandible from side to side.

A

Masseter

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15
Q

Closes and protrudes the lips and pulls the lips back against the teeth

A

Orbicularis oris

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16
Q

Elevates and draws the scapula medially. It also extends and/or flexes the head.

A

Splenius capitis

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17
Q

Elevates and helps the scapula rotate when adducting the arm.

A

Rhomboideus minor

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18
Q

Depresses and abducts the scapula, rotates it down and stabilizes it.

A

Pectoralis minor

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19
Q

Adducts, flexes, and medially rotates the humerus inward.

A

Pectoralis major

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20
Q

Abducts the scapula and rotates it upward. It also lifts the ribs when the scapula is fixed.

A

Serratus anterior

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21
Q

Compresses the abdomen and can rotate the vertebral column

A

Internal and external oblique

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22
Q

Flexes the lumbar region of the vertebral column and compresses the abdomen.

A

Rectus abdominis

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23
Q

Elevates and/or adducts the scapula, rotates the scapula up or down, and draws the head back when the shoulders are fixed.

A

Trapezius

24
Q

Elevates and rotates the scapula downward while adducting the arm.

A

Rhomboideus major

25
Q

It laterally rotates and abducts the arm at the shoulder

A

Infraspinatus

26
Q

Laterally rotates, extends, and adducts the humerus at the shoulder and stabilizes the elbow joint.

A

Teres minor

27
Q

Assists the extension of the humerus, medially rotates the humerus, helps rotate the scapula downward.

A

Teres major

28
Q

Extends, adducts, and medially rotates the arm at the shoulder. Also draws the arm inferiorly and posteriorly.

A

Latissimus dorsi

29
Q

Connective tissue that acts as the origin for muscles of the lower back.

A

Lumbodorsal fascia

30
Q

Abducts the arm at the shoulder, flexes and medially rotates the arm at the shoulder, and extends and laterally rotates the arm at the shoulder.

A

Deltoid

31
Q

Flexes the arm and forearm at the shoulder and elbow respectively and rotates the radius to supinate the hand.

A

Biceps brachii

32
Q

Flexes the forearm at the elbow.

A

Brachialis

33
Q

Antagonistic to the brachialis, extends the forearm and arm at the elbow and shoulder respectively.

A

Triceps brachii

34
Q

Extends and abducts the hands at the wrist functioning in radial hand movement the wrist.

A

Extensor carpi radialis

35
Q

Flexes the forearm at the elbow and supinates and pronates the forearm at the joint between he radius and ulna so the forearm is in a neutral position.

A

Brachioradialis

36
Q

Pronates the forearm and aids in flexing the forearm at the elbow.

A

Pronator teres

37
Q

Flexes and abducts the hand at the wrist.

A

Flexor carpi radialis

38
Q

Aids the deltoid when abducting the arm at the humerus.

A

Supraspinatus

39
Q

Extends the four medial digits, spreads the digits as it extends them, extends the wrist if the fingers are flexed.

A

Extensor digitorum

40
Q

Flexes and rotates the thigh away from the midline at the hip.

A

Tensor fasciae latae

41
Q

Flexes and draws the thigh toward the midline at the hip. And medially rotates the thigh.

A

Pectineus

42
Q

Laterally rotates the thigh toward the midline and flexes the thigh at the hip.

A

Adductor longus

43
Q

Flexes the calf at the knee and flexes, abducts, and laterally rotates the thigh if flexed at the hip.

A

Sartorius

44
Q

Extends the four lateral toes and everts the foot at the ankle.

A

Extensor digitorum longus

45
Q

Extends the leg at the knee.

A

Vastus lateralis and vastus medialis

46
Q

Extends the leg at the knee. Also flexes the thigh at the hip.

A

Rectus femoris

47
Q

Laterally rotates and extends the thigh at the hip

A

Gluteus maximus

48
Q

Flexes the leg at the knee, extends the thigh at the hip, and medially rotates the thigh.

A

Semitendinosus

49
Q

Flexes the leg at the knee, extends the thigh at the hip, and rotates the thigh laterally if flexed.

A

Biceps femoris

50
Q

Serves as the insertion point for the superficial muscles of the calf

A

Calcaneal tendon

51
Q

Plantar flexes the foot at the ankle and flexes the leg at the knee (when not bearing weight).

A

Gastrocnemius

52
Q

Plantar flexes the foot at the ankle. It is located beneath the gastrocnemius

A

Soleus

53
Q

Dorsally flexes the foot at the ankle and inverts and adducts the foot

A

Tibialis anterior

54
Q

Everts and abducts the foot. It also weakly provides plantar flexing of the foot at the ankle and everts the foot at the intertarsal joints.

A

Peroneus longus

55
Q

Flexes the leg at the knee, extends the thigh at the hip, and medially rotates the tibia.

A

Semimembranosus

56
Q

Connects the tibial tuberosity to the quadriceps tendon.

A

Patellar ligament

Anatomy & Physiology Lab (25 decks)

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