These large, ovoid structures are the most anterior cranial nerve endings.
What are the olfactory bulbs.
100
This "white" part of the eye is fibrous, and extends from the clear cornea.
What is the sclera?
100
This structure, referred to as the eardrum, is at the deep terminus of the external auditory canal.
What is the tympanic membrane?
100
This space in the meninges circulates the cerbral spinal fluid.
What is the subarachnoid space?
100
This is the innermost layer of the meninges that adheres to the spinal cord.
What is the pia mater.
200
This cross is formed from the two optic nerves on the inferior surface of the brain.
What is the optic chiasm.
200
This portion of the eye is vascular, and contains the rods and cones.
What is the retina?
200
This tube connects the pharynx and the middle ear, and helps equalize pressure.
What is the eustachian tube?
200
This straight muscle extends upward from the eyeball to move the eye up.
What is the superior rectus muscle?
200
There are 31 pairs of these structures, which extend from the spinal cord.
What are the spinal nerves?
300
This portion of the sheep brain is comparatively small compared to a human brain.
What is the cerebrum?
300
This portion of the eye is filled with vitreous humour, and is located posterior to the lens.
What is the posterior cavity/vitreous chamber?
300
These are the three bones that carry the sound message from the tympanic membrane to the oval window.
What are the ossicles?
300
This muscle acts on the suspensory ligaments of the lens to aid in accommodation.
What is the ciliary body?
300
This is the "horses tail" that extends inferiorly from the spinal cord.
What is the cauda equina?
400
This portion of the sheep brain (cranial nerves) is comparatively large compared to the human brain.
What are the olfactory bulbs?
400
This spot anterior to the optic nerve has no rods or cones, and is called the blind spot.
What is the optic disc?
400
This nerve results from the combination of the cochlear nerve and the vestibular nerve.
What is the vestibulocochlear nerve (Cr.VIII)?
400
This aperture dilates and constricts in response to contraction of the muscles of the iris.
What is the pupil?
400
This single extension from the spinal cord tethers the spinal cord to the coccyx to limit movement (and damage) of the SC.
What is the filum terminale?
500
This portion of the sheep's CNS extends horizontally from the sheep brain, rather than turning at a right angle and descending vertically, as in the human CNS.
What is the direction of the sheep spinal cord?
500
This portion of the eye is lateral to the optic nerve within the retina, and contains a high number of rods and cones for unusual acuity.
What is the fovea centralis?
500
This structure senses positional changes during rotation of the head.
What are the semicircular canals?
500
This cranial nerve extends from the brain and wanders through the thoracic cavity and abdomen.
What is the vagus nerve?
500
This pace is found between the bony layer of the dura mater and the meningeal layer of the dura mater.