Lab 7: Brain and Cranial Nerves

Olfactory nerve

What is nerve I?

Olfactory nerve

What nerve carries sensory information for the sense of smell?

Primary Olfactory Cortex (Uncus)

What is the name of the region of the brain that is on the inferomedial surface of the temporal lobe of the brain that processes smell sensory information

Optic nerve

What is the name of nerve II?

Optic Nerve

What nerve transmits visual sensory information from the retina to the brain for the special sense of sight?

There are no photoreceptors at the optic disc

Why do we have a blind spot?

Occipital lobe

Which lobe of the brain contains the primary visual cortex?

Oculomotor Nerve

What is the name of CN III?

No

Does the oculomotor have sensory functions?

Oculomotor Nerve

The nerves that conduct motor information to the inferior rectus, medial rectus, superior rectus, and inferior oblique muscles to control movement of the eye.

Oculomotor Nerve

The nerve that conducts motor information to the intraocular eye muscles to control the size of the pupil. It constricts the pupil

Oculomotor Lens

The nerve that conducts motor information to the intraocular eye muscles that control the shape of the lens and make it more spherical to produce clear images

Oculomotor Nerve

The nerve that conducts motor information to the muscles that elevate the eyelid.

Direct Light Reflex

The direct light reflex test; the test that observes the constriction of the eye when light is shone on the eye.

Consensual Light Reflex

The test where light is shone in one eye and constriction is observed in the other eye.

Accommodation Reflex

Testing the ability of an individual to focus their eyes.

Trochlear Nerve

What is the name of nerve IV?

Trochlear Nerve

What nerve conducts motor information to the superior oblique extraocular muscle?

Abducens nerve

What is the name of CN VI?

Abducens

What is the name of the nerve that innervates and carries motor information to the lateral rectus extraocular muscle.

Trigeminal Nerve

What is the name of CN V?

Mixed nerve

A nerve that has both sensory and motor functions. Ex: trigeminal nerve

Trigeminal Nerve

The nerve that transmits general information from the scalp, forehead, nose, cheeks, lower jaw, gums, and teeth.

Trigeminal nerves

The nerve that conducts motor information to skeletal muscles engaged in mastication including the masseter and temporalis.

Primary Somatosensory Cortex

The primary somatosensory cortex is located in the postcentral gyrus of the parietal lobe. It is responsible for processing sensory information from the body, including touch, temperature, pain, and proprioception.