Back Information

Question 1

How do the vertebral curves go?

Answer 1

Convex, Concave, Convex, Concave

Question 2

What are the 6 anatomical features of a vertebrae?

Answer 2

• body
• pedicle
• transverse process
• lamina
• spinous process
• vertebral foramen

Question 3

2 components of IV discs

Answer 3

1) Anulus fibrosus - the outer fibrous part

2) Nucleus populous - the gelatinous central mass

Question 4

There are __ layers of back muscles

Answer 4

6

Question 5

2 muscles of the first layer of back muscles

Answer 5

Trapezius and Latissimus Dorsi

Question 6

3 Muscles of the second layer of back msucles

Answer 6

• Levator scapula,
• Rhomboid major
• Rhomboid Minor

Question 7

2 muscles of the 3rd layer of back muscles

Answer 7

Serratus posterior inferior and superior

Question 8

2 muscles of the 4th layer of back muscles

Answer 8

• Splenius capitis and cervicus

Question 9

3 muscles of the 5th layer of back muscles

Answer 9

• Iliocostalis,
• Longissimus
• Spinalis

Question 10

3 muscles of the 6th layer of back muscles

Answer 10

• Semispinalis
• Multifidus
• Rotatores

Question 11

Layers __ - __ are considered deep muscles of the back

Answer 11

4 - 6

Question 12

Extrinsic back muscles receive their nerve supply from the _____ rami of the cervical nerves and act on the ___ limb.

Answer 12

anterior

upper

Question 13

Intrinsic back muscles receive their nerve supply from the _____ rami of the cervical nerves and act to maintain what?

Answer 13

posterior

posture

Question 14

The 5th layer of back muscles (ILS) grouped together are called what?

Answer 14

Erector Spinae