Biology Questions and Answers
motor coordination and equilibrium of
the body. (Do not confuse this withmuscle command, performed by the (^)
cerebral hemispheres).
- Why is the cerebellum
more developed in mammals
that jump or fly?
The cerebellum is the main bstructure that coordinates therain
movement and the equilibrium of thebody. For this reason it appears more (^)
developed in mammals(like bats). The cerebellum that jump or flyis also very
important for the flight of birds.
- Which is the brain region
responsible for the regulation
of breathing and blood
pressure?
The neural regulation ofblood pressure and other physiological breathing, (^)
parameters like secretions, peristaltic movemeheartbeat, digestivents and (^)
transpiration is performed by the
medulla.
The medulla, together with the pons
and the midbrain, brainstem. is part of the
- Which is the brain region
that receives conscious
sensory information? Which is
the brain region that triggers
the voluntary motor activity?
In the brain conscious sensory
information situated in a specialis received by the neurons region called
postcentral gyrus (or sensory gyrus).Gyri arcerebrum. Ee the convolutions of theach of the two postcentral (^)
gyri are located in one of the parietal
lobes of the cerebrum.
The voluntary motor activity (voluntary
muscle movemneurons situated ent) is commanin the precentral gyrusded by (^)
(or motor gyrus). Each of the two
precentral gyri arfrontal lobes of the cerebrum.e located in one of the
The names post- anto the fact that the motor d pre-central referand sensory (^)
gyri are hemisphere by the sulcus centralis,spaced apart in each cerebral a
fissure that separates the parietal and
frontal lobes.
- What is the spinal cord? Of
which elements is the spinal
cord constituted?
The spinal cord is the dorsal neural cord
of vertebrates. Icentral nervous system that contint is the part of the (^) ues
in the trunk to facilitate the nervous
integration of the whole body.
The spinal corneurons situated d is madin its central pe of groups ofortion (^)
forming the gray matter and of axon
fibers in its exterior white matter. Neural buportion forming ndles connect tothe (^)
both lateral sides of the spinal cord
segments to form the dorsal aspinal roots that join to form thnd ventrale spinal
nerves. The dorsal spinal roots present
a ganglion with sensory information; tneurons that receivehe ventral spinal (^)
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