8/18 Back And Spine Anatomy Intro

Question 1

What element of us somite becomes a vertebrae

Answer 1

Sclerotome

Question 2

What area of the somite becomes intrinsic back muscles

Answer 2

The epimere of the myotome

Question 3

What part of the somite becomes ventral lateral muscles

Answer 3

The hypo mere of the myotome

Question 4

What element of the somite becomes the dermis of the back

Answer 4

The dermatome

Question 5

What is the difference between the epimere and the hypomere

Answer 5

The epimere is at the top of the myotome section of the somite and has cells that migrate to form back muscles. The Hypomere is at the bottom of the myotome section of the somite and migrates cells to form the hypaxial muscles including to the lower limbs

Question 6

What does a Sclerotome become?

Answer 6

The vertebra that protect the spinal cord

Question 7

Where are somites located in an embryo

Answer 7

They’re located along the dorsal of the embryo with 812 five and eight somites in different sections I think

Question 8

What is the large diamond shaped muscle near the top of the back that connects the scapula spine and head

Answer 8

Trapezius

Question 9

What are the primary roles of the trapezius

Answer 9

Elevate adduct and rotate the scapula

Question 10

What is the innervation of the trap easiest muscle

Answer 10

Spinal accessory nerve or CN 11

Question 11

How does the unique fiber orientation of the trapezius muscle lead to its numerous actions

Answer 11

The trapezius muscle has fibers that are oriented up and down near a horizontal and going down towards the base of the spine this makes it so that it can contract and cods elevation abduction and rotation of the Scapula

Question 12

What is the primary action of the rhomboid major and minor muscle

Answer 12

Adduct the scapula

Question 13

What is the innervation of the rhomboid major and minor

Answer 13

To the C5 vertebrae dorsal scrapula nerve

Question 14

Describe the topographical relationship at the rhomboid major minor and the Levator scapula muscles to each other and to the trapezius

Answer 14

All of these muscles are located anterior to the trapezius

Question 15

What are the primary actions of the levator scrapula muscle

Answer 15

Elevate the scrapula

Question 16

What is the innervation of the Levator scrapula muscle

Answer 16

Through the c5 vertebrae and the dorsal scapular nerve

Question 17

Latissimus dorsi muscle primary action

Answer 17

Abduct or extend the humorous

Question 18

What is the innervation of the latissimus dorsi muscle

Answer 18

Through the C6 C7 and C8 vertebrae and the thiracedorsal nerve

Question 19

What are some other names for the deep back muscles

Answer 19

The intrinsic back muscles the paraspinal muscles or the epaxial muscles

Question 20

Is the difference between superficial back muscles and deep deep muscles

Answer 20

Superficial back muscles are really upper limb muscles that are derived from the hypomere and innervated by the central remus. The deep back muscles are derived from the Epimere

Question 21

Where are splenius capitis muscle and splenius cervicis

Answer 21

In the neck at the top of the spine

Question 22

Actions of the splenius muscles

Answer 22

Head and neck extension and rotation

Question 23

What are the three erector spinal muscles down the middle of the back?

Answer 23

Illiocostalis and longissimis and spinalis

Question 24

What are the actions of the erector spinae muscles

Answer 24

Posture; extension; and vertical flexion

Question 25

What are the three transversospinal muscles? In the middle right on the spine

Answer 25

Semi spinalis and rotatores and multifudus

Question 26

What are the actions of the transversospinal muscles

Answer 26

Posture

Question 27

Where are the suboccipital muscles and what is the significance

Answer 27

They are just below the skull and they make a triangle that the main blood flow to the back of the brain goes through

Question 28

How are the deep back muscles innervated

Answer 28

They are innervated segmentally from each segment of the spine

Question 29

What are the five different sections of the spine

Answer 29

The cervical vertebrae The thoracic vertebrae the lumbar vertebrae the sacral vertebrae and the coccygeal vertebrae

Question 30

How many vertebrae are in each region of the spine

Answer 30

7 12 5 5 and 3 to 5

Question 31

What is a primary versus a secondary curve in the spine

Answer 31

Hey Primary curve develops in the fetus and is retained in the thoracic region the secondary curve developed later and is in the cervical and lumbar region also car called the lordotic curve

Question 32

What is the spinous process

Answer 32

The pikey pity on the back of the spine think c7 and the certibral process

Question 33

Transverse process

Answer 33

Sticks out to the side on the spinal vertebrae

Question 34

Lamina

Answer 34

I between the spinous process and the transverse process

Question 35

Pedicle

Answer 35

The connection to the spinal body from the process

Question 36

Invertibral foraman

Answer 36

The whole between the Pedicle of different vertibrea

Question 37

Superior articular facet

Answer 37

The projection up from the process to the next vertebra

Question 38

Inferior articular facet

Answer 38

The projection down from the process to the next vertebra

Question 39

Facet joint

Answer 39

Joint between the facet of vertebra

Question 40

Pars interacticularis

Answer 40

The body of the posterior section of the spine between the superior and inferior facet

Question 41

Vertebral body

Answer 41

The large disk

Question 42

Vertebral arch

Answer 42

The arch connected to the large disc

Question 43

Intervertebral disc

Answer 43

The jelly donut of cushion for the vertebra body

Question 44

Vertebral Foramen and canal

Answer 44

The space where the spinal cord travels

Question 45

Bifid spinus process

Answer 45

The main posterior process on a few cervical vertibrea shaped like a wish bone

Question 46

Atlas vertebra

Answer 46

The one that holds the head up

Question 47

Axis vertebra

Answer 47

C2 aids in rotation with the dens process

Question 48

Unicate process

Answer 48

Hook that hold cervical process from lateral movement

Question 49

Costal facets

Answer 49

Rib connections

Question 50

Mammillary process

Answer 50

Where muscles connect in the lumbar region little notches

Question 51

Occipital Bone

Answer 51

a saucer-shaped membrane bone situated at the back and lower part of the cranium, is trapezoidal in shape and curved on itself.

Question 52

what is a special name for C7

Answer 52

Vertebral prom

Question 53

The number of bones in each region of the back

Answer 53

C1-C7; T1-T12; L1-L5; S1-S5; 3-4 Coccyx

Question 54

what nerve innervates the Trapezius

Answer 54

Spinal Accessory Nerve (CN XI)

Question 55

What artery runs anterior to the trapezius

Answer 55

superficial branch of the transverse cervical artery

Question 56

what nerve innervates the romboids?

Answer 56

Dorsal Scapular Nerve (C5)

Question 57

what nerve innervates the Latissimus dorsi muscle

Answer 57

Thracodorsal nerve

Question 58

What are the three groupings of deep back muscles?

Answer 58

Splenius Muscles; Erector Spinae; Transversospinalis group.