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A&P Lab > Muscle Anatomy > Flashcards

Muscle Anatomy Flashcards

1
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;they are wide int he middle and taper at each end

A

Parallel

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2
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.

A

Convergent

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3
Q

The fascicles are attached to a tendon in a feather like manner.

A

Pennate

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4
Q

These are sphincter muscles. The fascicles surround an opening.

A

Circular

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5
Q

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

A

Frontalis

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6
Q

It pulls the skin posteriorly.

A

Occipitalis

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7
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

Sternocleidomastoid

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8
Q

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

A

Temporalis

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9
Q

Raises and pulls back the lower mandible, closes the mouth, and clinches the teeth. It may also move the mandible from side to side.

A

Masseter

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10
Q

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

A

Orbicularis oris

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11
Q

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

A

Levator scapulae

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12
Q

Extends the head when contracting together, and rotates the head when contracting singly.

A

Splenius capitis

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13
Q

Elevates and helps the scapula rotate when adducting the arm.

A

Rhomboideus minor

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14
Q

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

A

Pectoralis minor

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15
Q

Adducts, flexes, and medially rotates the humerus inward,

A

Pectoralis major

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16
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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17
Q

Compresses the abdomen and can rotate the vertebral column

A

Internal and external obliques

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18
Q

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

A

Rectus abdominis

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19
Q

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

A

Trapezius

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20
Q

Elevates and rotates the scapula downward while adducting the arm

A

Rhomboideus major

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21
Q

It laterally rotates and abducts the arm at the shoulder.

A

Infraspinatus

22
Q

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

A

Teres minor

23
Q

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

A

Teres major

24
Q

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

A

Latissimus dorsi

25
Q

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

A

Lumbodorsal fascia

26
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

27
Q

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

A

Biceps brachii

28
Q

Flexes the forearm at the elbow

A

Brachialis

29
Q

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

A

Triceps brachii

30
Q

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

A

Extensor carpi radialis

31
Q

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

A

Pronator teres

32
Q

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

A

Brachioradialis

33
Q

Flexes and abducts the hand at the wrist

A

Flexor carpi radialis

34
Q

Aids the deltoid when abducting the arm at the humerus

A

Supraspinatus

35
Q

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

A

Extensor digitorum

36
Q

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

A

Tensor fasciae latae

37
Q

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

A

Pectineus

38
Q

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

A

Adductor longus

39
Q

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

A

Sartorius

40
Q

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

A

Extensor digitorum longus

41
Q

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

A

Rectus femoris

42
Q

Laterally rotates and extends the thigh at the hip

A

Gluteus maximus

43
Q

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

A

Semitendinosus

44
Q

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

A

Biceps femoris

45
Q

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

A

Calcaneal tendon

46
Q

Extends the leg at the knee

A

Vastus medialis and vast us lateralis

47
Q

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

A

Gastrocnemius

48
Q

Plantar flexes the foot at the ankle, it is located beneath the gastocnemius

A

Soleus

49
Q

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

A

Tibialis anterior

50
Q

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

A

Peroneus longus

51
Q

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

A

Semimembranosus

52
Q

Connects the tibial tuberosity to the quadriceps tendon

A

Patellar ligament

A&P Lab (4 decks)

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