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A&P Lab 1147 > Skeletal Muscles > Flashcards

Skeletal Muscles Flashcards

1
Q

Raises eyebrows

Wrinkles Forehead

A

Occipito-Frontalis

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2
Q

Compresses cheek “sour”

A

Buccinator

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3
Q

Elevates corner of mouth (smile)

A

Zygomaticus

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4
Q

Depresses corner of mouth (frown)

A

Depressor Anguli oris

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5
Q

Draws eyebrows toward midline

“Anger/disgust”

A

Corrugator supercilli

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6
Q

Closes eye

“Sleep/pain”

A

Orbicularis oculli

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7
Q

Closes mouth

“Kissing muscle”

A

Orbicularis oris

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8
Q

Raises and furrows upper lip

“Snarl”

A

Levator Labii superioris

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9
Q

Lowers lower lip

“Pout”

A

Depressor Labii inferioris

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10
Q

Depresses mandible

A

Digastric

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11
Q

Elevates mandible

Attaches to large salivary gland

A

Masseter

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12
Q

Elevates mandible

Attaches to temporal bone

A

Temporalis

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13
Q

Flexes Head

Part of the neck and shoulders

A

Sternocleidomastoid

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14
Q

Extends head

Part of neck and shoulders

A

Splendius capitus

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15
Q

Extends head

Moves scapula posteriors

A

Trapezius

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16
Q

Flexes arm
Extends arm
Abducts arm

A

Deltoid

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17
Q

Moves scapula anteriorly

2 muscles of the chest

A

Pectoralis minor

Serratus anterior

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18
Q

Flexes arm

A

Pectoralis major

19
Q

Increases thoracic volume

A

Diaphragm

20
Q

Elevates ribs

Increases thoracic volume

A

External intercostalis

21
Q

Depresses ribs

Decreases thoracic volume

A

Internal intercostalis

22
Q

Back muscle that:
Extends arm
Adducts arm

A

Lattisumus Dorsi

23
Q

Muscle in the back that:

Extends trunk

A

Erector Spinae

24
Q

Anterior part of upper arm that:
Flexes arm
Flexes forearm

A

Biceps brachii

25
Q

Posterior muscle of upper arm that:
Extends arm
Extends forearm

A

Triceps brachii

26
Q

Abdominal muscle that:
Flexes trunk
Decreases thoracic volume
Increases intraabdominal pressure

A

Rectus abdominus

27
Q 
Abdominal muscle that:
Decreases thoracic volume
Flexes trunk
Increases intrabdominal pressure
Superficial
A

External abdominal oblique

28
Q 
Abdominal muscle that:
Decreases thoracic volume
Flexes trunk
Increases intrabdominal pressure
Deep
A

Internal abdominal oblique

29
Q

Abdominal muscle that:
Decreases thoracic volume
Increases intrabdominal pressure
Inside of mannequins abdomen

A

Transverse abdominus

30
Q

What are the two muscles in the iliopsoas group?

These both flex the trunk and flex thigh.

A

Psoas major

Iliacus

31
Q

This major butt muscle extends the thigh.

A

Gluteus maximus

32
Q

This butt muscle abducts the thigh.

A

Gluteus medius

33
Q

This upper leg/hip muscle adducts the thigh.

A

Adductors

34
Q

This upperleg/hip muscle flexes and adducts the thigh.

A

gracilis

35
Q

Name the 4 quadriceps femoris muscles and their action.

A
  1. Rectus femoris
  2. Vastus lateralis
  3. Vastus medialis
  4. Vastus intermedius

Extend the knee

36
Q

Name the 3 muscles of the hamstring group and their action.

A
  1. Biceps femoris
  2. Semitendinosus
  3. Semimembranosus

Extend thigh and flex leg at knee

37
Q

Starts at top of rectus femoris and flexes thigh. Snake like

A

Sartorius

38
Q

This is the calf. It’s action is plantar flexion and flexes the leg.

A

Gastrocnemius

39
Q

This is below and center to the gastrocnemius and it’s action is plantar flexion.

A

Soleus

40
Q

This calf muscle is lateral to the tibia and is responsible for dorsiflexion.

A

Tibialis anterior

41
Q 
Visceral organs
Spindle fibers
1 nucleus 
Non striated
Involuntary
A

Smooth muscle tissue

42
Q 
Heart
Y Branches
1 nucleus
Striated intercalated discs
Involuntary with automaticity
A

Cardiac muscle tissue

43
Q 
Muscles attach to bony skeleton
Long fibers
Multinucleated
Striated
Voluntary
A

Skeletal muscle tissue

A&P Lab 1147 (3 decks)

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