Week 1 Dermatomes, Myotomes, Joints- Severson Flashcards Preview

Skin/ Musculoskeletal > Week 1 Dermatomes, Myotomes, Joints- Severson > Flashcards

Flashcards in Week 1 Dermatomes, Myotomes, Joints- Severson Deck (25):
1

Define dermatome and myotome

Dermatome = unilateral area of skin innervated by the nerve fibers of a single nerve that originates from a single cord segment
Myotome = spinal nerves innervating groups of muscles

2

dermatome of C5

shoulder

3

dermatome of T4

nipple

4

dermatome of T10

umbilicus

5

dermatome of L5

medial foot/ dorsum of the foot

6

dermatome of S1

lateral leg/foot

7

Spinal nerve to upper extremity abductors (deltoid, biceps)

C5

8

spinal nerve to forearm flexors (biceps, brachioradialis)

C5-6

9

Spinal nerve to triceps

C7

10

spinal nerve to quadriceps

L3-4

11

spinal nerve to achilles

S1-2

12

What spinal cord segments supplies motor innervation to the intrinsic muscles of the hand?

C8-T1

13

What spinal cord segments supplies motor innervation to the intrinsic muscles of the anal sphincter

S234

14

dermatome of C6

thumb (lateral/radial regions of the hand)

15

dermatome of C7

middle finger

16

dermatome of C8

little finger (ulnar/medial regions of the hand)

17

Synarthroses

(together joints) bones are separated by connective tissue which prevents limited movement

18

Syndesmosis

type of synarthroses - bones are joined by intervening fibrous tissue
ex: membrane between radius and ulna and joints between skull bones

19

Synchondrosis

type of synarthroses- two bones are separated from each other by cartilage which permits very limited movement

Ex: Epiphyseal plate, intervertebral disc, and symphysis

20

Synostosis

type of synarthroses- two bones are joined together by bone

Ex: frontal bone, epiphyseal plate

21

Diarthroses/ Synovial Joints have what common features?

-Synovial space: an articular cavity or discontinuity between bones
-synovial fluid
-synovial membrane
-Articular surface (smooth surfaces for articulation)

22

What produces synovial fluid?

serous membrane

23

What is a bursae?

closed scas or cavities of synovial membrane usually separating bone from overlying tendon of muscle filled with synovial fluid.

-Bursae reduce friction between structures
-communicate with synovial cavity of adjacent joint

24

Arthritis
Synoyitis
Bursitis

Arthritis = inflammation of join
Synoyitis = inflammation of the synovial membrane of joint
Bursitis = inflammation of a bursa

25

hinge joints

permit flexion and extension only