Human Anatomy- Superior Muscles & Actions 1-41 + Integumentary 1-8

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Last updated 3:39 AM on 10/13/26
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60 Terms

1
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Occipitofrontalis

elevates eyebrows, retracts scalp

<p>elevates eyebrows, retracts scalp</p>
2
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Epicranial aponeurosis

no action

<p>no action</p>
3
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Buccinator

compresses cheeks

<p>compresses cheeks</p>
4
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orbicularis oris

closes lips

<p>closes lips</p>
5
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zygomaticus major

elevates angle (corner) of the mouth laterally

<p>elevates angle (corner) of the mouth laterally</p>
6
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zygomaticus minor

elevates upper lip, exposes upper teeth

<p>elevates upper lip, exposes upper teeth</p>
7
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orbicularis oculi

closes eyelids

<p>closes eyelids</p>
8
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Platysma

depresses lower lip, depresses angle of the mouth

<p>depresses lower lip, depresses angle of the mouth</p>
9
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Temporalis

elevates mandible, retracts mandible

<p>elevates mandible, retracts mandible</p>
10
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Masseter

elevates mandible, protracts mandible

<p>elevates mandible, protracts mandible</p>
11
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Digastric

depresses mandible, elevates hyoid

<p>depresses mandible, elevates hyoid</p>
12
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Omohyoid

depresses hyoid

<p>depresses hyoid</p>
13
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Sternohyoid

depresses larynx

<p>depresses larynx</p>
14
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Thyrohyoid

elevates larynx, depresses hyoid

<p>elevates larynx, depresses hyoid</p>
15
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Sternocleidomastoid

bilateral: flexes neck, unilateral: rotates head to opposite side

<p>bilateral: flexes neck, unilateral: rotates head to opposite side</p>
16
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splenius capitis

bilateral: extends neck, unilateral: laterally flexes neck and rotates head to opposite side

<p>bilateral: extends neck, unilateral: laterally flexes neck and rotates head to opposite side</p>
17
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semispinalis capitis

bilateral: extends neck, unilateral: rotates head to opposite side

<p>bilateral: extends neck, unilateral: rotates head to opposite side</p>
18
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Scalene muscles (anterior, middle, posterior)

elevates ribs 1-2 during deep inspiration, laterally flexes the neck

<p>elevates ribs 1-2 during deep inspiration, laterally flexes the neck</p>
19
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Diaphragm

increases thoracic cavity dimension during inspiration

<p>increases thoracic cavity dimension during inspiration</p>
20
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external intercostals

elevates ribs during inhalation

<p>elevates ribs during inhalation</p>
21
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internal intercostals

depresses ribs during forced exhalation

<p>depresses ribs during forced exhalation</p>
22
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transversus thoracis

depresses ribs during exhalation (weakly)

<p>depresses ribs during exhalation (weakly)</p>
23
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rectus sheath

anterior & posterior fibrous connective tissue covering over rectus abdominis muscle, formed by aponeurosis of the abdominal wall muscles

<p>anterior & posterior fibrous connective tissue covering over rectus abdominis muscle, formed by aponeurosis of the abdominal wall muscles</p>
24
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linea alba

fibrous, vertical band running down the midline of the rectus sheath

<p>fibrous, vertical band running down the midline of the rectus sheath</p>
25
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external oblique

bilateral: flexes vertebral column, unilateral: rotates vertebral column to opposite side (contralateral rotation)

<p>bilateral: flexes vertebral column, unilateral: rotates vertebral column to opposite side (contralateral rotation)</p>
26
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internal oblique

bilateral: flexes vertebral column, unilateral: rotates vertbral column to same side (ipsilateral rotation)

<p>bilateral: flexes vertebral column, unilateral: rotates vertbral column to same side (ipsilateral rotation)</p>
27
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transverse abdominis

compresses anterior abdominal wall

<p>compresses anterior abdominal wall</p>
28
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rectus abdominis

flexes vertebral column (trunk)

<p>flexes vertebral column (trunk)</p>
29
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levator scapulae

elevates scapula

<p>elevates scapula</p>
30
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rhomboid minor

retracts scapula

<p>retracts scapula</p>
31
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rhomboid major

retracts scapula

<p>retracts scapula</p>
32
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trapezius

elevates scapula, retracts scapula, depresses scapula

<p>elevates scapula, retracts scapula, depresses scapula</p>
33
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latissimus dorsi

adducts shoulder, extends shoulder, and medially rotates shoulder

<p>adducts shoulder, extends shoulder, and medially rotates shoulder</p>
34
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Dermis

composed of dense irregular connective tissue

<p>composed of dense irregular connective tissue</p>
35
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dermal papilla

bumps projecting from the dermis into the undersurface of the epidermis

<p>bumps projecting from the dermis into the undersurface of the epidermis</p>
36
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hypodermis or subcutaneous tissue

loose connective tissue primarily composed of adipocytes

<p>loose connective tissue primarily composed of adipocytes</p>
37
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hair follicle

formation of hair below the surface of the skin

<p>formation of hair below the surface of the skin</p>
38
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arrestor pili muscle

ribbon of smooth muscle extending from the hair follicle to the dermal papilla

<p>ribbon of smooth muscle extending from the hair follicle to the dermal papilla</p>
39
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Sweat (sudoriferous) glands

gland secreting watery fluid to epidermis

<p>gland secreting watery fluid to epidermis</p>
40
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Oil (sebaceous) gland

gland secreting sebum (oily substance) to lubricate and waterproof hair shaft and epidermis

<p>gland secreting sebum (oily substance) to lubricate and waterproof hair shaft and epidermis</p>
41
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Epidermis

Outer layer of skin

<p>Outer layer of skin</p>
42
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What is an action of the occipitofrontalis?

elevate eyebrow or retract scalp

43
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What is an action of the buccinator?

compresses cheeks

44
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What is an action of the obicularis oris?

closes lip

45
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What is an action of the zygomatic major?

elevates angle (corner) of the mouth laterally

46
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What is an action of the zygomatic minor?

Elevates upper lip

47
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orbicularis oculi

closes eyelids

48
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platysma

depresses lower lip

49
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What is an action of the temporalis?

elevates mandible

50
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What is an action of the masseter?

elevates mandible

51
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What is an action of the digastric?

depresses mandible

52
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What is an action of the omohyoid?

depresses hyoid

53
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What is an action of the sternohyoid?

depresses hyoid

54
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What is an action of the sternothyroid?

depresses larynx

55
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What is an action of the thyrohyoid?

elevate larynx

56
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What is an action of the sternocleidomastoid?

flexes neck

57
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What is an action of the splenius capitis?

extends neck

58
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What is an action of the semispinalis capitis?

extends neck

59
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What is an action of the scalene muscles?

elevates ribs 1-2 during deep inspiration

60
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What is an action of the obicularis oris?