Mastering AP questions

Which facial bones fuse to form the upper jaw?

maxillary

Which surface of the maxillary bones fuse together?

medial

Name the opening in the occipital bone through which the spinal cord passes.

Foramen magnum

Identify the area of the occipital bone that articulates with the vertebral column.

Occipital condyles

Which nerve innervates the diaphragm?

phrenic

Which nerve from the brachial plexus innervates the extensor muscles of the arm and forearm?

radial

Spinal nerves from the brachial plexus innervate the

shoulder girdle and upper limb

Identify the hole that marks the opening of the ear canal on the superficial surface of the skull.

External acoustic meatus

The phrenic nerves arise from the

cervical plexus

The primary connection between cerebral hemispheres is the

corpus callosum

The occipital bone forms part of the:

cranium

In adults, the spinal cord usually extends to which level?

first or second lumbar vertebra

The area anterior to the central sulcus is the

frontal lobe

Enlargements of the spinal cord occur

in the cervical and lumbar regions

Damage to the hypoglossal nerve may result in the ________.

inability to speak

Which of the following pairs is not properly matched? - lumbar spinal nerves: 4 - sacral spinal nerves: 5 - coccygeal spinal nerves: 1 - thoracic spinal nerves: 12 - cervical spinal nerves: 8

lumbar spinal nerves: 4

The cortex inferior to the lateral sulcus is the

temporal lobe

The thalamus is the largest portion of which major brain region?

diencephalon

Which gives the correct order of meninges from outside to inside? pia mater, arachnoid, dura mater dura mater, arachnoid, pia mater arachnoid, pia mater, dura mater dura mater, pia mater, arachnoid

dura mater, arachnoid, pia mater

The two cerebral hemispheres are separated by which of the following?

longitudinal fissure

Which of the following structures is the most superficial? Dural sinus Arachnoid mater Dura mater Pia mater

Dura mater

Which of the following bones is not a facial bone? Zygomatic Ethmoid Maxillary Inferior nasal concha

Ethmoid

Which cranial nerve is responsible for the motor innervation of pharyngeal muscles and parotid salivary glands?

IX

Where is the mandibular fossa located?

Inferior surface of the zygomatic process

Identify the small hole on the maxillary bone located below the orbit.

Infraorbital foramen

Identify the region of the mandible that forms part of the temporomandibular joint.

Mandibular condyle

Identify the region of the temporal bone that articulates with the lower jaw.

Mandibular fossa

Identify the region of the temporal bone that articulates with the mandible.

Mandibular fossa

Which of the following locations is not formed by part of the maxillae?

Nasal septum

Identify the posterior most region of the hard palate.

Palatine bones

Which facial bones form the roof of the mouth?

Palatine bones and maxillary bones

Which part of the maxillary bones form the roof of the mouth?

Palatine processes

Identify the location of the occipital bone.

Posterior surface and base of the cranium

Which of the following statements is correct? - Both cranial and spinal nerves are part of the CNS - Spinal nerves are sensory, whereas cranial nerves are motor - Spinal nerves are located in the PNS, whereas cranial nerves are located in the CNS - Spinal nerves outnumber cranial nerves.

Spinal nerves outnumber cranial nerves.

Identify the landmark on the temporal bone that is a pointy spine.

Styloid process

Which cranial nerve is responsible for the sensory innervation of the anterior two-thirds of the tongue?

VII

What bone forms part of the nasal septum?

Vomer

The ________ is the layer of the meninges that is in direct contact with the surface of the brain

pia matter

Nerve trunks containing axons derived from several spinal nerves originate from

plexuses

The cranial nerve that has three branches is the

trigeminal

The entire spinal cord is divided into ________ segments.

31

Identify the best description of the mandibular condyle.

A projection on the mandible

Identify the best description of the mandibular fossa.

A shallow depression

The cranial nerves whose primary function is special sensory are

I, II, and VIII

Identify the region of the temporal bone found superior to the external acoustic meatus that articulates with the parietal bone.

Squamous part

Motor innervation of the muscles of facial expression is transmitted through which cranial nerve?

VII

Identify the region of the temporal bone that forms part of the zygomatic arch.

Zygomatic process

The brachial plexus nerve that innervates the flexor muscles of the arm and forearm and the skin on the lateral surface of the forearm is the ________ nerve.

musculocutaneous

Which facial bones makeup the central portion of the bridge of the nose?

nasal

Damage to the ________ nerve, which is vital for the autonomic control of visceral function, could result in death.

vagus

Which of the following is cranial nerve (CN) X?

vagus

Identify the small facial bones found in the medial wall of the orbit.

lacrimal

Identify the large suture on the posterior surface of the skull at the border of the occipital bone.

lambdoid

The abducens nerve innervates which extrinsic eye muscle?

lateral rectus

The two cerebral hemispheres are separated by the

longitudinal fissure

What is the anatomical name for the facial bones known as "cheekbones"?

zygomatic bones