Test 51 (anatomy of head and neck)

1. Structures found in the posterior triangle of the neck include:

a. the levator scapulae muscle

b. the common carotid artery

c. the glossopharyngeal nerve

d. the accessory nerve

e. part of the brachial plexus

answera.T   b.F   c.F   d.T   e.T
The common carotid runs behind the sternoclavicular joint and the sternocleidomastoid.
The glossopharyngeal nerve is located on the stylopharyngeus muscle
 

2. The following are branches of the external carotid artery:

a. the facial artery

b. the occipital artery

c. the inferior thyroid artery

d. the vertebral artery

e. the lacrimal artery

answera.T   b.T   c.F   d.F   e.T
The inferior thyroid artery is a branch of the thyrocervical trunk of the subclavian artery and vertebral artery is a branch of the subclavian artery
The lacrimal artery arises from the ophthalmic artery.

3. Structures passing through the foramen magnum include:

a. the anterior spinal artery

b. the dura

c. the vagus nerve

d. the spinal accessory nerve

e. the vertebral artery

answera.T   b.T   c.F   d.T   e.T
The vagus nerve leave the skull through the jugular foramina.
 

4. The glossopharyngeal nerve:

a. supplies the stylopharyngeus

b. supplies both ordinary and special sensation to the 
    posterior third of the tongue

c. supplies the carotid sinus

d. supplies motor fibres to the pharynx

e. supplies sensory fibres to the middle ear

answera.T   b.T   c.T   d.F   e.T
It supplies only sensory fibres to the pharynx. The motor fibres come from the cranial part of the accessory nerve.

5. The following bones forms the inner part of the middle cranial fossa:

a. the ethmoid

b. the greater wing of the sphenoid

c. the petreous part of the temporal bone

d. the mastoid process

e. the occipital bone

answera.F   b.T   c.T   d.F   e.F
The ethmoid forms part of the anterior cranial fossa.
The mastoid process does not form the floor of the middle fossa.
The occipital bone forms the posterior cranial fossa.