The blood brain barrier consists of blood vessels and astrocytes in the gyri of the brain and functions to selectively prevent some molecules from entering the brain, like immune cells.

Ventral horns receive sensory information and process that to send to the brain.

REM sleep occurs at several times in the night during sleeping and is when dreams occur.

Megan was being chased by a dog.  She was running and was very scared.  She could hear the dog barking getting closer and closer to her.  She turned her head and saw the dog right behind her. Which cranial nerve is involved in hearing the dog bark? Which cranial nerve allow her to turn her head? Which cranial nerve allows her to recognize it is a dog chasing her?

An epidural is given only below the L3 vertebrae so that no injury to the spinal cord can occur since it has to penetrate into the cerebrospinal fluid within the arachnoid layer of the meninges.

The patellar reflex is an example of a monosynaptic reflex which involves only 2 neurons, a sensory and a motor neuron.

Identify the STRUCTURAL classification of the articulation indicated by the red arrow in the picture. Identify the ONE of the landmarks articulating to form the articulation indicated by the red arrow in the picture.

Identify the bone pictured. (NOTE:  Include the specific type of bone as well as the name of the bone.) BONUS:  Is this bone left or right?

Which suture would separate the frontal and parietal bones? In babies, what fontanelle would be involved to form the suture identified in part A?

Identify the bone indicated by the blue x in the picture. Identify the bone indicated by the red circle in the picture. BONUS:  Which of these three bones (the one with the blue X, the one with the black triangle, or the one with the red circle) would NOT be found in the oral cavity? Identify the NAME of that bone.