Head, Neck and Vertebral Column Nerves, Vessels and Regions Part 2

Question 1

Which subdivision of the anterior triangle contains the

1. common carotid artery
2. internal jugualr vein
3. hypoglossal
4. vagus nerves

Answer 1

carotid triange

Question 2

What muscle supports and elevates the floor of mouth; & elevation of hyoid

Answer 2

Mylohoid Muscle

Question 3

what is the function of diagastric muscles>

Answer 3

opens mouth by lowering mandible and raises hyoid bone

Question 4

give the 2 origins, insertion and innervation of the diametric muscles?

Answer 4

ORIGIN

1. ANT BELLYl; diagastric fossa on lower inside mandible
2. PB; mastoid notch on med side of mastoid prices of temp bone

INSERION: att of tendon btw 2 bellies of body of HB

INNERVATION:
Ant belly= mylohyoid nerve from inf alveolar branch of mandibular V3

post belly= facial nerve VII

Question 5

give original, insertion and innervation of mylohyoid muscles

Answer 5

mylohyoid line on mandible–> bod of HB and fibres from muscle on pop side

INNERVATIONl: mylohyoid nerve from inferior alveolar branch of mandibular nerve [V3}

Question 6

what muscles are innervated by the mylohyoid nerve from inferior alveolar branch of mandibular nerve [v3]

Answer 6

posteiror belly of digastric muscle and mylohyoid muscle

Question 7

Where is the facial artery and vein contained?

Answer 7

submandibular triangle

Question 8

what does the submittal triangle contain?

Answer 8

submental lymph nodes

Question 9

what is contained within the muscular triangle?

Answer 9

infrahyoid muscles, pharynx, thyroid and parathyroid glands

Question 10

which subdivision of anterior triangle contains no vessels?

Answer 10

muscular

Question 11

what is contained within the carotid triangle>?

Answer 11

1. common carotid artery
2. internal jugilar vein
3. hpoglossal and vagus nerves

Question 12

name the 8 muscle sin the posterior triangle of neck

Answer 12

1. sternocleidomastoid
2. trapezius
3. splenius capitis
4. levator scapular
5. post scalene
6. middle scalene
7. anterior scalene
8. omohyoid

Question 13

give the function of the sternocleidomastoid muscle

Answer 13

1. individually will tilt head toward shoulder on same side

rotating head to turn face to pop side

2. acting together draw head forwards

Question 14

what is the function of trapezius?

Answer 14

assist in rotating scapula during abduction of hummus above horizontal;
upper fibers elevate
middle fibres adduct
lower depress scapula

Question 15

Give 2 origins and inserions of the sternocleidomastoid muscle

Answer 15

STERNAL HEAD:
upper part ant surface of manubrium of sternum–> lat 1/2 nsupeiror nuchal line

CLAVICULAR HEAD
sup surface of medial 1/3 clavicle–? lat surface of mastoid process

Question 16

What is the innervation of SCM and trapezius muscle

Answer 16

SCM= accessory nerve [XI] branches from ant rami of C2 -C3 (C4)

TRAPEZIUS= motor accessory nerve [XI] proprioception C3 and C4

Question 17

what are subdivisions of posterior triangle and what divides it?

Answer 17

OMOHYOID MUSCLES splits PT into two

1. OCCIPITAL TRIANGLE: larger ,superior
2. SUBCLAVIAN: contains distal portion of subclavian artery

Question 18

muscles in the posterior triangle

Answer 18

1. OMOHYOID MUSCLE

2. VERTEBRAL M (splenius capitis, levator scapulae, ant, mid, post scalene)

Question 19

vessels in the posterior triangel

Answer 19

1. EJV joins with SUBCLAVIAN VEIN

2. SUBCLAVIA VEIN, transverse cervical and suprascapualr veins and arteries

Question 20

nerve in posterior triangle

Answer 20

1. accessory nerve (CN XI)
   2, cervical plexus forms within the muscle of the floor of posterior triangle
2. phrenic nerve
3. trunks fo brachial plexus also cross the floor of posterior triangle

Question 21

arterial supply of thyroid ?

Answer 21

1. superior infeiror thyroid artery

Question 22

venous drainage of thyroid gland

Answer 22

sup mid inf thyroid vein

Question 23

where does parotid duct opens adjacent to?

Answer 23

crown of the 2nd upper molar

Question 24

what doe the parotid gland enclose?

Answer 24

1. external carotid artery,
2. retromandibular vein
3. facial nerve (VII)

Question 25

how is venous drainage achieved in parotid gland?

Answer 25

via retromandibular vein

Question 26

innervation of parotid gland

Answer 26

V3 and CNIX