Study questions for ch12 Bio210
What best explains the convolutions and folds present in an adult brain: the highly folded convolutions
and flexures increase the brains surface area allows it to fit in skull
The outer cortex of gray matter present in the cerebellum is composed primarily of: neuron cell bodies
The brain contains 4 ventricles.
The cerebral cortex of the brain is the location of our conscious mind.
Random electrical stimulation of the precentral gyrus(elevated ridges) would be more likely to cause
muscle contractions of the extremities (face, hands, feet,)
Gyri- elevated ridges (precentral gyrus- frontal lobe)
Fissure- deep groove (longitudinal and transverse)
Sulcus- shallow groove (central sulcus-separates frontal lobe from parietal lobe)
Sensory stimulation of which body area would be most likely to activate brain activity? Lips & fingertips
5 lobes of brain:
Frontal-MOTOR
Parietal-------------
Occipital -----------
Temporal----------- SENSORY
Insula ---------------
The phrases left brain and right brain indicate that the 2 cerebral hemispheres display a phenomenon
called lateralization.
Cerebral white matter in each hemisphere is important: for communication between the 2
hemispheres.
Damaged basal nuclei, as in Parkinson’s disease, result in: the inability to monitor the intensity of
movements
Which of the following brain regions is a major convergence area for most sensory input before it is sent
on to the cerebral cortex? Thalamus (on top of spine-gate keeper)
Hypothalamus makes: ADH- antidiuretic hormone and oxytocin
Which brain region would result in death is severely damaged? Medulla oblongata
What structure produces cerebrospinal fluid? Choroid plexus
Why is the blood-brain barrier ineffective against alcohol? b/c alcohol is lipid soluble
