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Anatomy & Physiology I
Skeletal Muscles
25
Anatomy
Undergraduate 1
10/13/2015

Additional Anatomy Flashcards

 


 

Cards

Term

Facial Muscles

 

Frontalis

Definition

Raises eyebrows

Wrinkles in forehead

Term

Facial Muscles


Occipitalis

Definition
On occipital bone
Term

Facial Muscles


Frontalis and occipitalis together form

Definition
Galla aponeurotica
Term

Facial Muscles


Galla aponeurotica provides

Definition

tight connection with skin &

 loose connection with cranial bones

 

(possibility of scalp wound)

Term

Facial Muscles


Orbicularis oculi

Definition

Closes eye

Allows to squint, blink & wink

Term

Facial Muscles


Orbicularis oris

Definition

Closes & puckers lips

"kissing muscle"

Term

Facial Muscles


Buccinator

Definition

Deep in cheek

Compresses cheek; involved in chewing

"muscles of pipers"

Term

Facial Muscles


Zygomaicus

Definition

Raises mouth corner

"smiling corner"

Term

Chewing Muscles


Masseter

Definition

Superficial on cheek

From temporal bone to mandible

Elevates mandible; major chewing

Term

Chewing Muscles


Temporalis

Definition

Elevates mandible

Masseter synergist

Term

Neck Muscles


Platysma

Definition

Sheet-like; anterior

Pools mouth corners downward; tenses skin of neck

"samauri muscle"

Term

Neck Muscles


Sternoclidomastoid

 

 

Definition

Flexes neck (if both contract)

"Prayer muscle"

Rotates the neck to opposite side--laterally (if one contracts)

Term

Anterior Thorax Muscles


Pectoralis major

Definition

Adducts & flexes humerus

Medially rotates

Term

Anterior Thorax Group


Name of Intercostal Muscles

Definition

External Intercostals

Internal Intercostals

Term

Anterior Thorax Group


External intercostals

Definition

Elevates ribs

Involved in inhale

Term

Anterior Thorax Group


Internal intercostals

Definition

Depresses ribs

Provides forceful exhale

Antagonists in breathing

Term

Anterior Thorax Group


Internal intercostals

Definition

Depresses ribs

Provides forceful exhale

Antagonists in breathing

Term

Anterior Thorax Group


Serratus anterior

Definition

Rotates scapula

Protracts scapula

Term

Anterior Thorax Group


Pectoralis minor

Definition
Depresses & protracts scapula
Term

Posterior Muscles


Erector spinae group


Definition
Extend trunk, prime Mover--antigravity
Term

Move Pectoral Girdle & Upper Arm


Trapezius

Definition

"hood"

Extends neck & adducts scapula

Term

Move Pectoral Girdle & Upper Arm


Rhomboideus minor & major

Definition
Retracts & rotates scapula
Term

Move Pectoral Girdle & Upper Arm


Latissimus dorsi

Definition

Form lower back

Extends, adducts, and medially rotates humerus

(back stroke during swimming)

Term

Move Pectoral Girdle & Upper Arm


Deltoid

Definition
Abducts humerus
Term

Move Pectoral Girdle & Upper Arm


Teres major

Definition
Extends, medially rotates & adducts humerus
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