Science Bowl

BIOLOGY

Biology - 23

BIOL-91; Multiple Choice:  The part of the human brain which is an important relay station for
the sensory impulses and also is the origin of many of the involuntary acts of the eye such as the
narrowing of the pupil in bright light is the:

a)  hypothalamus
b)  midbrain
c)  corpus callosum
d)  cerebellum

ANSWER:   B -- Midbrain

BIOL-91; Multiple Choice:  In the human brain, body temperature, metabolism, heart rate, sexual
development, sleep and the body's use of fat and water are influenced by this region of the brain. 
This region of the brain is the:

a)  hypothalamus
b)  midbrain
c)  corpus callosum
d)  cerebellum

ANSWER:   A -- hypothalamus

BIOL-91; Multiple Choice:  In which cerebral lobes is the speech center located?  Is it the:

a)  frontal
b)  parietal
c)  temporal
d)  occipital

ANSWER:   A -- frontal

BIOL-91; Multiple Choice:  In most axons, the myelin sheath is interrupted at intervals of about 1
millimeter or more.  These interruptions are called the:

a)  glial
b)  nodes of Ranvier  (pron: ron-vee-ay)
c)  collaterals
d)  nodes of Babinet

ANSWER:   B -- Nodes of Ranvier