Unit One General Questions

Question 1

What are the borders of the quadrangular space and what goes through it?

Answer 1

Lateral: Humerus
Medial: Long head of tricep
Superior: Teres Minor
Inferior: Teres Major

Axillary Nerve
Posterior Circumflex Humeral Artery

Question 2

What are the borders of the triangular space and what goes through it?

Answer 2

Long head of triceps, Teres minor and major

Circumflex scapular artery

Question 3

What nerve innervates the trapezius and where is it found?

Answer 3

Accessory nerve.

Runs down the side of the neck and deep to trapezius

Question 4

What innervates the latissimus dorsi muscle?

Answer 4

Thoracodorsal nerve.

Runs deep to scapula and deep to pectoralis major. It drops down from the axillary artery region.

Question 5

What artery feeds the muscles of the suboccipital triangle?

Answer 5

The vertebral artery and the descending branch of the occipital artery.

Question 6

What innervates the levator scapulae?

Answer 6

Anterior rami of C3-C4 and the dorsal scapular nerve.

Question 7

What is innervated by the dorsal scapular nerve?

Answer 7

Levator scapulae

Rhomboid major and minor

Question 8

At what level does the dural sac end?

Answer 8

S2-S3

Question 9

What is the name of thin string of the spinal cord that extends off the tip of the conus medullaris?

Answer 9

Filum terminale internum and externum

Question 10

What innervates the rhomboid muscles?

Answer 10

Dorsal Scapular Nerve

Question 11

What innervates the levator scapulae?

Answer 11

anterior rami of C3-C4 and dorsal scapular nerve

Question 12

What innervates the serratus posterior muscles?

Answer 12

anterior rami of upper and lower thoracic

Question 13

What innervates the splenius capitis?

Answer 13

dorsal rami of middle cervical nerves

Question 14

Accessory nerve

Answer 14

Runs down the side of the neck, found deep to trapezius, cranial nerve XI? innervates trapezius

Question 15

Superficial cervical artery/vein

Answer 15

Runs deep to trapezius,

Question 16

Thoracodorsal nerve

Answer 16

Runs vertically deep to the subscapularis muscle, innervates latissimus dorsi muscle

Question 17

Thoracodorsal artery/vein

Answer 17

Runs vertically deep to the subscapularis muscle, feeds latissimus dorsi muscle

Question 18

Long thoracic nerve

Answer 18

Runs superficial to the serratus anterior muscle and deep to the scapula

Question 19

Lateral thoracic artery/vein

Answer 19

Runs across the serratus anterior muscles, feeds the serratus anterior, and subscapularis

Question 20

Axillary Nerve

Answer 20

Comes through the quadrangle space, innervates the deltoid, teres minor,

Question 21

Suprascapular Nerve

Answer 21

Runs through the suprascapular notch under the superior transverse scapular ligament then around and under the spine of scapula and deep to the infraspinatus muscle,

Question 22

Suprascapular artery/vein

Answer 22

Runs over the suprascapular notch then around the spine of scapula and deep to the infraspinatus muscle,

Question 23

Posterior Circumflex humeral artery/vein

Answer 23

Runs through the quadrangular space, feeds the deltoid

Question 24

Greater Occipital Nerve

Answer 24

Posterior ramus of C2, runs over all muscles of suboccipital triangle and pierces semispinalis capitisand trapezius

Question 25

Suboccipital Nerve

Answer 25

Posterior ramus of C1, runs through the suboccipital triangle

Question 26

Vertebral Artery

Answer 26

Comes off the subclavian artery and runs through the transvers foramen of the cervical vertebrae, feeds all four muscles of the suboccipital triangle

Question 27

Dorsal Scapular Nerve

Answer 27

Innervates the rhomboid muscles and the levator scapulae

Question 28

Dorsal Scapular Artery

Answer 28

Feeds levator scapulae or rhomboids, runs under levator scapulae and along medial border of scapula

Question 29

What dermatome for clavicles?

Answer 29

C5

Question 30

What dermatome for the lateral sides of the arms?

Answer 30

C5,6

Question 31

What dermatome for the medial sides of the arms?

Answer 31

C8, T1

Question 32

What dermatome for the thumb?

Answer 32

C6

Question 33

What dermatomes for the hand?

Answer 33

C6,7,8

Question 34

What dermatome for the last two fingers?

Answer 34

C8

Question 35

What dermatome for the nipples?

Answer 35

T4

Question 36

What dermatome at level of umbilicus?

Answer 36

T10

Question 37

What dermatome at inguinal region?

Answer 37

L1

Question 38

Dermatome for the anterior and inner surfaces of lower limbs?

Answer 38

L1,2,3,4

Question 39

Dermatome for foot from medial to lateral?

Answer 39

L4->L5->S1

Question 40

Dermatome for lateral and posterior of lower limbs?

Answer 40

L5, S1, S2

Question 41

Dermatome for lateral part of foot and little toe?

Answer 41

S1

Question 42

Dermatome for perineum?

Answer 42

S2,3,4

Question 43

Dermatome for the ears?

Answer 43

C2

Question 44

What do the vertebral arteries join to become?

Answer 44

They join and become the basilar artery which feeds the brain and runs up the anterior side of the brain stem.