Axial Skeleton Muscles test task with correct answers
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Course
Anatomy
Institution
Anatomy
Axial Skeleton Muscles test task with
correct answersAxial Skeleton Muscles test task with
correct answersAxial Skeleton Muscles test task with
correct answersAxial Skeleton Muscles test task with
correct answersAxial Skeleton Muscles test task with
correct answers
Axial Skeleton Muscles test task with
correct answers
Buccinator - CORRECT ANSWERS-D: main muscle of the cheek deep to the masseter
O: posterior maxillary bone and mandible
I: orbicularis oris
A: compresses cheeks as in whistling, blowing or sucking
*muscles of mastication
Deltiod - CORRECT ANSWERS-D; triangular muscle atop the shoulder
O: acromion and spine of scapula, lateral third of clavicle
I: deltoiid tuberosity of humerus
A: abduction of the arm at the shoulder
* ant. trunk muscles that move arm and shoulder
Diaphragm - CORRECT ANSWERS-D: broad, flat, circular muscle forming the floor of
the thoracic cavity
O: xiphoid process of sternum; costal cartialge of last 6 ribs and lumbar vertebae
I: central tendon of diaphragm (no bone)
A: flattens to increase the volume of the thoracic cavity; inspiration
*muscles of respiration
Erector spinae - CORRECT ANSWERS-D: long back muscle with three columns (I/L/S)
from pelvis to head
O: illiac crest, transverse processes of cervical, throacic and lumbar vertebrae, and/or
ribs 3-6
I: ribs and transvers processes of vertebrae about 6 segments above origin
A: extends and laterally rotates the vertebral column
*posterior trunk muscles that move vertebral column
External intercostals - CORRECT ANSWERS-D: 11 pairs extended from rib to rib in
oblique downward direction
O: inferior border of each rib
I: superior border of rib below
A: pulls ribs to one another to elevate thoracic cavity: inspiration
*muscles of respiration
, External oblique - CORRECT ANSWERS-D: lateral, superficial muscle of the abdomen
extending from pubis to thoracic cage
O: ribs 4/12
I: linea alba, pubic crest, costal cartilages of ribs 9-12
A: flexes and roates vertebral columb
*ant. trunk muscles - move abdomen/vertebral column
Frontalis - CORRECT ANSWERS-D: Two muscles connected via an aponeurosis
O: At cranial aponeurosis
I: at skin of eyebrow and root of nose
A: raises eyebrows
*facial expression
Infraspinatus - CORRECT ANSWERS-D: deep to traps w/in infraspinous fossa, rotator
cuff muscle
O: infraspinous fossa
I: greater tubercle of humerus
A: lateral rotation of the arm
*post. trunk muscles that move arm and shoulderf
Internal intercostals - CORRECT ANSWERS-D: 11 pairs extended from rib to rib in
direction opposite to external
O: superior border of each rib
I: inferior border of rib above
A: draws ribs together to depress thorax expiration
*Muscles of respiration
Internal oblique - CORRECT ANSWERS-D: deep to the external oblique with fibers
extending in opposite direction
O: illiac crest, lumbar fascia
I: linea alba, pubic crest, costal cartilages of ribs 9-12
A: flexes and rotates vertebral column
*ant. trunk muscles - move abdomen/vertebral column
Latissimus dorsie - CORRECT ANSWERS-D: broad, flat muscle of lower back
O: spinous processes of lower 6 thoracic vertebrae, all lumbar vertebrae, ribs 8-12,
lumbodorsal fascia
I: intertubercular groove of humerus
A: extends, adducts, and medially rotates shoulder
*post. trunk muscles that move arm and shoulder
Levator scapulae - CORRECT ANSWERS-D: between the shoulder and neck deep to
the trap
O: transverse processes of the first 4 cervicle vertebrae
I: vertebral border of scapula
A: elevates the scapula
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