Back

Question 1

4 types of vertebrae’s

Answer 1

cervical- have foramen
thorax- big transverse processes
lumbar- whale fin and suction cups
sacral- big gills

Question 2

Extrinsic muscles of back

Muscle of branchial origin

Answer 2

trapezius

Question 3

Extrinsic muscles of back

Limb Muscles of hypaxial origin

Answer 3

Lats
levator scapulae
rhomboid major
rhomboid minor

Question 4

Extrinsic muscles of back

Body Wall Muscles of Hypaxial origin

Answer 4

Serratus posterior

serratus inferior

Question 5

Intrinsic/ Epaxial muscles of back
Superficial Musculature- Spinotransversalis Part

common function

Answer 5

splenius capitis muscle
splenius cervicis muscle

common fx: Bilaterally extend the head and neck; unilaterally they flex them and rotate them to same side

Question 6

Intrinsic/ Epaxial muscles of back

Superficial Musculature- Erectorspinae Part

Answer 6

Iliocostalis
-lumborum
-thoracis
-cervicis
common fx: extension of v column; assist w lateral flexion; stabilization of vertebral column
Longissimus muscle
-thoracis
-cervicis
-capitis
common fx: extend head and rotate it to same side
Spinalis
-thoracis
-cervicis 
-capitis
common fx: extensiono f v column and head

Question 7

Intrinsic/ Epaxial muscles of back

Deep Musculature- transversospinalis group

Answer 7

Semispinalis
-thoracis
-cervicis
common fx: extend v column and rotates it to same side
-capitis fx: extends head; weak rotation of head to opp side
Multifidus
-lumborum
-thoracis
-cervicis
common fx: extension of v column; postural support

Question 8

innervation of back musculature

Answer 8

dorsal ramus (easy)