Week 2

Question 1

Forebrain

Answer 1

Prosencephalon

Question 2

Midbrain

Answer 2

Mesencephalon

Question 3

Hindbrain

Answer 3

Rhombencephalon

Question 4

Brain stem

Answer 4

Mesen, meten and myelencephalon

Question 5

Telencephalon

Answer 5

Includes Cerebral cortex (cortex outer layer of brain) and subcortical structures: caudate nucleus, putamen, globus, amygdala and hippocampal formation.

Question 6

Diencephalon

Answer 6

Consists of complex collection of nuclei lying symmetrically on either side of midline. Includes: thalamus, hypothalamus, epithalamus and subthalamus.

Question 7

Mesencephalon

Answer 7

Several structures around cerebral aqueduct such as: periaqueductal gray, mesencephalic reticular formation, substantia nigra, red nucleus, superior and inferior colliculi, cerebral peduncles, some cranial nerve nuclei and projection of sensory/motor pathways.

Question 8

Metencephalon

Answer 8

Pons and cerebellum

Question 9

Myelencephalon

Answer 9

Open and closed medulla, sensory and motor nuclei, projection of sensory and motor pathways, and some cranial nerve nuclei.

Caudal end develops into spinal cord.

Question 10

Gray matter

Answer 10

Composed of neurons and their supporting cells and is enclosed by white matter that is dense layer of ascending and descending nerve fibers.

Question 11

Spinal cord

Answer 11

Spinal cord is essential link between PNS and brain. Conveys sensory info from external/internal sites via spinal nerves. Nerves synaptic connect in spinal cord or medulla oblongata and ascend to subcortical nuclei.

Elongated cylindrical structure lying within vertebral canal, which includes central canal and surrounding gray matter.

Question 12

Most protected organ in body

Answer 12

CNS-Brain and spinal cord.

Protected by skull, meninges (dura mater, arachnoid, pia) and cerebral spinal fluid.