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Anatomy > Chapter 8: Human Muscular System > Flashcards

Chapter 8: Human Muscular System Flashcards

1
Q

What are the head muscles?

A
  • Occipitofrontalis
  • Temporalis
  • Orbicularis oculi
  • Zygomaticus major
  • Orbicularis oris
  • Masseter
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2
Q

What is this muscle?

A

Occipitofrontalis
- Frontal belly
- Occipital belly

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3
Q

What is this muscle?

A

Temporalis

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4
Q

What is this muscle?

A

Orbicularis oculi
Action - Closes eye

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5
Q

What is this muscle?

A

Zygomaticus major
Action - Elevates corner of mouth

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6
Q

What is this muscle?

A

Orbicularis oris
Action - Purses lips

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7
Q

What is this muscle?

A

Masseter
Action - Elevates jaw

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8
Q

What are the neck muscles?

A
  • Platysma
  • Digastric
  • Mylohyoid
  • Sternohyoid
  • Sternothyroid
  • Thyrohyoid
  • Scalene(s)
  • Sternocleidomastoid
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9
Q

What is this muscle?

A

Platysma

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10
Q

What is this muscle?

A

Digastric
(Located under the jaw. Has two heads)

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11
Q

What is this muscle?

A

Mylohyoid

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12
Q

What is this muscle?

A

Sternohyoid

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13
Q

What is this muscle?

A

Sternothyroid

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14
Q

What is this muscle?

A

Thyrohyoid

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15
Q

What is this muscle?

A

Scalene

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16
Q

What is this muscle?

A

Sternocleidomastoid
Action - Flexes neck
(Medial and lateral head)

17
Q

What are the anterior trunk muscles?

A
  • Pectoralis major
  • Pectoralis minor
  • Serratus anterior
  • External intercostal(s)
  • Internal intercostal(s)
  • Rectus Abdominus
  • External oblique
  • Internal oblique
  • Transverse abdominis
  • Linea Alba (structure not muscle)
  • Diaphragm
18
Q

What is this muscle?

A

Pectoralis major
Origin - Sternal end of clavicle, sternum, Cartilage of ribs 1-6
Insertion - Greater tubercle of humerus
Action - Flexes arm

19
Q

What is this muscle?

A

Pectoralis minor
Action - Protracts and rotates scapula inferiorly

20
Q

What is this muscle?

A

Serratus anterior

21
Q

What is this muscle?

A

External intercostal
Action - Elevates ribs

22
Q

What is this muscle?

A

Internal intercostal
Action - Depresses ribs

23
Q

What is this muscle?

A

Rectus Abdominis
Action - Flexes vertebral column

24
Q

What is this muscle?

A

External Oblique (what direction do fibers point)

25
Q

What is this muscle?

A

Internal oblique

26
Q

What is this muscle?

A

Transversus abdominis

27
Q

What is this structure?

A

Linea Alba

28
Q

What is this muscle?

A

Diaphragm

29
Q

What muscles are involved in the posterior trunk muscles?

A
  • Trapezium
  • Latissimus dorsi
  • Splenius capitis
  • Levator scapulae
  • Rhomboid minor
  • Rhomboid major
  • Teres Major
  • Erector spinae group composed of Spinalis, longissimus, and iliocostalis
30
Q

What is this muscle?

A

Trapezium

31
Q

What is this muscle?

A

Latissimus dorsi
Origin - Lower 6 thoracic vertebrae via thoracolumbar fascia, lumbar vertebrae and iliac crest
Insertion - Intertubercular sulcus of humerus
Action - Extends arm

32
Q

What is this muscle?

A

Splenius capitis
Action - Extends neck

33
Q

What is this muscle?

A

Levator scapulae

34
Q

What is this muscle?

A

Rhomboid minor

35
Q

What is this muscle?

A

Rhomboid major

36
Q

What is this muscle?

A

Teres major

37
Q

What makes up the spinae group?

A
  • Spinalis
  • Longissimus
  • Iliocostalis
    Action - Extends vertebral column

Anatomy (30 decks)

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