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BIO 121 - Intro to A&P > Lab Quiz #7 > Flashcards

Lab Quiz #7 Flashcards

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Biology 101 flashcards
1
Q

Pectoralis Major

A

Flexion, adduction, and medial rotation of the arm.

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2
Q

Latissimus Dorsi

A

Extension, adduction, and medial rotation of the arm.

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3
Q

Deltoid

A

Abducts and rotates arm

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4
Q

Brachioradialis

A

Flexion of forearm

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5
Q

Brachialis

A

Flexion of forearm

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6
Q

Biceps Brachii

A

Flexion and supination of forearm; flexion of arm

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7
Q

Triceps Brachii

A

Extension of forearm; long head extends and adducts arm

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8
Q

Pectineus

A

Adduction and flexion of thigh

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9
Q

Adductor Longus

A

Adduction and flexion of thigh

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10
Q

Gracilis

A

Adduction of thigh; flexion and medial rotation of leg

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11
Q

Sartorius

A

Flexion, abduction, and lateral rotation of thigh; flexion of leg

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12
Q

Vastus Intermedius

A

Extension of leg

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13
Q

Vastus Lateralis

A

Extension of leg

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14
Q

Vastus Medialis

A

Extension of leg

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15
Q

Rectus Femoris

A

Extension of leg; flexion of thigh

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16
Q

Semimembranosus

A

Extension of thigh; flexion of leg

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17
Q

Semitendinosus

A

Extension of thigh; flexion of leg

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18
Q

Biceps Femoris

A

Extension of thigh; flexion of leg

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19
Q

Gluteus Maximus

A

Extension and lateral rotation of thigh/hip; powerful extensor for climbing and running.

20
Q

Gluteus Medius

A

Abduction and medial rotation of thigh; steadies the pelvis during walking.

21
Q

Tibialis Anterior

A

Dorsiflexion and inversion of the foot

22
Q

Soleus

A

Plantar flexion of foot

23
Q

Gastrocnemius

A

Plantar flexion of foot; flexion of the leg

24
Q

Physiology of muscle contraction: Your Brain

A

Signal from nervous system arrives at muscle, via synapsis

25
Q

Physiology of muscle contraction: Muscle Cell Membrane

A

Action Potential spreads across muscle membrane (sarcolemma)

26
Q

Physiology of muscle contraction: Sarcoplasmic Reticulum (SR)

A

Action Potential releases Calcium ion (Ca2+) into sarcoplasm, creating more of a positive charge

27
Q

Physiology of muscle contraction: Actin and Myosin Filaments

A

Ca2+ triggers actin to bind with myosin

  • Sarcomere shortens
  • Cycle keeps repeating as long as Ca2+ present and ATP available (to break actin and myosin)
28
Q

Delayed Calcium Uptake

A

When too much Calcium is released in the sarcoplasm, it can take a little extra time after voluntary muscle exertion until muscle relaxes.

29
Q

Muscle Fatigue

A

Loss of the ability to contract.

  • Eventually, production of ATP falls behind demand.
  • Lactic Acid is released at this point
30
Q

Flexion/Extension

A

F: Bending action that DECREASES angle between body parts
E: Straightening action that INCREASES angle between body parts

31
Q

Abduction/Adduction

A

Ab: moving AWAY from median plane, on coronal plane
Ad: moving TOWARD median plane, on coronal plane

32
Q

Supination/Pronation

A

S: rotating forearm and hand laterally so palm faces anteriorly
P: rotating forearm and hand medially so palm faces posteriorly

33
Q

Circumduction/Rotation

A

C: moving in a circle to make a cone
R: rotation along a long axis

34
Q

Dorsiflexion/Plantar Flexion

A

D: a bending action that elevates the soles (stand on heels)
PF: a bending action that elevates the heels (standing on toes)

35
Q

Tensor Fasciae Latae

A

Flexes, abducts, and medially rotates thigh; steadies trunk on thigh while standing.

36
Q

Effect of load on time to muscle fatigue

A

Greater the load, the faster muscles will fatigue

37
Q

What happens to cause muscle fatigue?

A

ATP is used up, and lactic acid is being released.

38
Q

Upper Leg/Thigh: Posterior

A 
Semimembranosus
Semitendinosus
Biceps Femoris
Gluteus Maximus
Gluteus Medius
39
Q

Upper Leg/Thigh: Lateral

A

Tensor Fasciae Latae

40
Q

Upper Leg/Thigh: Anterior

A

Rectus Femoris
Vastus Intermedius
Vastus Lateralus
Sartorius

41
Q

Arm: Extensor

A

Triceps Brachii

42
Q

Trunk

A

Pectoralis Major
Deltoid
Latissimus Dorsi

43
Q

Arm: Flexors

A

Brachioradialis
Biceps Brachii
Brachialis

44
Q

Lower Leg: Posterior

A

Gastrocnemius

Soleus

45
Q

Upper Leg/Thigh: Medial

A

Adductor Longus
Pectineus
Vastus Medialis
Gracilis

46
Q

Lower Leg: Anterior

A

Tibialis Anterior

BIO 121 - Intro to A&P (8 decks)

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