This cross section of the human brain depicts several key structures. Of the choices provided, which correctly labels the structures in the drawing?

A) 1 = hypothalamus, 2 = nucleus, 3 = axon, 4 = myelin sheath
B) 1 = corpus callosum, 2 = pons, 3 = cerebellum, 4 = medulla
C) 1 = hippocampus, 2 = reticular formation, 3 = medulla, 4 = spinal cord
D) 1 = thalamus, 2 = hypothalamus, 3 = pons, 4 = brain stem

Question

This cross section of the human brain depicts several key structures. Of the choices provided, which correctly labels the structures in the drawing?

A) 1 = hypothalamus, 2 = nucleus, 3 = axon, 4 = myelin sheath 
B) 1 = corpus callosum, 2 = pons, 3 = cerebellum, 4 = medulla 
C) 1 = hippocampus, 2 = reticular formation, 3 = medulla, 4 = spinal cord 
D) 1 = thalamus, 2 = hypothalamus, 3 = pons, 4 = brain stem

Quizplus · Accepted Answer

1. Corpus callosum: A broad band of nerve fibers joining the two hemispheres of the brain.
2. Pons: A part of the brainstem that links the medulla oblongata and the thalamus.
3. Cerebellum: A large structure of the hindbrain that controls fine motor skills.
4. Medulla: The base of the brainstem that controls heartbeat and breathing.

This Cross Section of the Human Brain Depicts Several Key