16.1

Question 1

Conus medullaris

Answer 1

Is the tapering inferior end of the spinal cord

Question 2

Cauda Equina

Answer 2

Nerve roots that project inferiorly from the spinal cord.

Question 3

Film Terminale

Answer 3

Is within the causa equina and is a thin stand of pita mater that helps anchor the conus medullaris to the coccyx.

Question 4

Two longitudinal depressions on spinal cord

Answer 4

Posterior median sulcus (Dorsal), Anterior median fissure ventral

Question 5

Cervical Enlargement

Answer 5

Located in the cervical inferior part of the spinal cord, contains neurons that innervate the upper limbs in between c6-c7

Question 6

Lumbosacral Enlargement

Answer 6

Extends through the lumbar and sacral parts of the spinal cord and innervates the lower limbs

Question 7

!6.2 Spinal Cord Meninges

Answer 7

Superficial to deep is vertebra, Epidural , Dura Mater, subdural space, Arachnoid mater, subarachnoid space and pia mater

Question 8

16. 2 epidural space

Answer 8

Lies between the duramater and periosteal covering the inner walls of the vertebra. Houses arreolar connective tissue, blood vessels and adipose connective tissue.

Question 9

Dura Mater

Answer 9

Is deep to the epidural space. Consists of a single meningeal layer. It provides stability to the spinal cord.

Question 10

Subdural Space

Answer 10

Separates the dura mater from the arachnoid Mater.

Question 11

Subarachnoid Space

Answer 11

Is dep to the arachnoid mater and is filled with CSF.

Question 12

Pia Mater

Answer 12

/is deep to the sub arachnoid space. Is an innermost meningeal layer composed of elastic and collagen fibers.

Question 13

Denticulate Ligaments

Answer 13

Are paired, lateral triangular extensions of the spinal pia mater that attach to the dura mater. They help suspend and anchor the spinal cord laterally to the dura mater.

Question 14

Gray Matter

Answer 14

Is centrallly located and resembles a butterfly.

Question 15

16.3 Anterior Horns

Answer 15

Are left and right anterior masses of gray matter. The anterior horns primarily house cell bodies of somatic motor neurons, which innervate skeletal muscles.

Question 16

Lateral Horns

Answer 16

Occur in the t1-L2 parts of the spinal cord only. Lateral horns contain cell bodies of autonomic motor neurons that innervate smooth muscle, cardiac muscle and glands.

Question 17

Posterior Horns

Answer 17

Are left and right posterior masses of gray matter. The axons of sensory neurons and cell bodies of interneurons are located in the posterior horns.

Question 18

Gray commissure

Answer 18

Is a horizontal bar of gray matter that surrounds the central canal.Primarily contains unmyelinated axons and serves as a communication between left and right sides of gray matter.

Question 19

Sensory Nuclei

Answer 19

In the posterior horn contain interneurons

Question 20

Somatic Sensory Nuclei

Answer 20

Receives information from sensory receptors such as pain or pressure receptors in the skin

Question 21

Motor Nuclei

Answer 21

In the anterior lateral horns primarily house contain motor neurons cell bodies that send nerve impulses to muscles and glands

Question 22

Somatic Motor Nuclei

Answer 22

In the anterior horns innervate skeletal muscle.

Question 23

Autonomic motor nuclei

Answer 23

In the lateral horns innervate smooth muscle, cardiac muscle and glands.