Four weeks following fertilization, the forerunner to the brain and spinal cord is formed, the

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bios 252 lab 2

• neural tube

–Answer Four weeks following fertilization, the forerunner to the brain and spinal cord is formed, the

• cerebrum

–Answer Largest part of the brain; responsible for voluntary muscular activity, vision, speech, taste, hearing, thought, and memory.

• Diencephalon

–Answer a brain region with three primary structures –Answer the thalamus, hypo- thalamus, and pineal gland.

• midbrain

–Answer is a narrow region between the pons and thalamus. It contains some nuclei and a lot of white matter.

• pons

–Answer contains mostly tracts of white matter. Many tracts pass vertically through the pons and form the cerebral peduncles of the midbrain. However, other tracts arriving at the pons enter the cerebellum through large bundles, the cerebellar peduncles.

• medulla oblongata

–Answer Part of the brainstem that controls vital life-sustaining func- tions such as heartbeat, breathing, blood pressure, and digestion.

• cerebellum

–Answer the "little brain" at the rear of the brainstem; functions include pro- cessing sensory input and coordinating movement output and balance 1 / 2

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• choroid plexuses

–Answer Cerebrospinal fluid is produced by specialized blood cells called

• lateral ventricles

–Answer lie within the cerebral hemispheres

• septum pellucidum

–Answer lateral ventricles are close anteriorly and are separated by a thin membrane called the

• interventricular foramen

–Answer connects lateral ventricles to third ventricle

• third ventricle

–Answer Found within the diencephalon, the narrows inferiorly to form the cerebral aqueduct.

• cerebral aqueduct

–Answer connects the third and fourth ventricles

• fourth ventricle

–Answer Found between the pons and cerebellum, the is a large, diamond-shaped expansion. As it narrows inferiorly, the joins the central canal of the medulla and spinal cord.

• dura mater

–Answer thick, outermost layer of the meninges surrounding and protecting the brain and spinal cord

• arachnoid mater

–Answer middle layer of the meninges

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