ANAT 100 BLOCK THEORY 2 ACTUAL TEST

ANAT 100 BLOCK THEORY 2 (ACTUAL / ) TEST

QUESTIONS WITH VERIFIED CORRECT ANSWERS GRADED A+

What does "two neuron pathway" mean? - ----Answers--- Between the CNS and any target organ, there are two neurons

What is an example of a "two neuron pathway"? - ---- Answers---The automatic nervous system

What is the preganglionic neuron? - ----Answers----has its cell body within the CNS -The axon enters into the PNS and travels to the autonomic ganglion

What is the autonomic ganglion? - ----Answers----where the preganglionic and postganglionic neurons meet and communicate -located in the PNS

What is a postganglionic neuron? - ----Answers----entirely in the PNS -its cell body is in the autonomic ganglion, while its axon travels to the target organ What is the brainstem? - ----Answers---Area of the brain that connects the brain to the spinal cord

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Situated just below the diencephalon

What is the brainstem comprised of? - ----Answers--- midbrain, pons, medulla

What is the midbrain? - ----Answers---•Most superior aspect of the brainstem •Anteriorly, the midbrain consists of large white matter tracts that make up the cerebral peduncles

•Postero-lateral view: midbrain has two pairs of raised bumps,

known as the superior and inferior colliculi

What is the pons? - ----Answers---•Structure in the middle of the brainstem •Located anterior to the 4th ventricle and the cerebellum •Pons has fibers connecting it to the cerebellum, allowing for communication between these two structures

What is the medulla oblongata? - ----Answers---•Most inferior structure •Continuous with the spinal cord

Where is the cerebellum located? - ----Answers---Structure that is appended to the back of the brainstem

Sits underneath the occipital lobe of the cerebrum 2 / 3

What does the cerebellum do? - ----Answers---coordinates movement and balance

What are meninges? - ----Answers---dura mater, arachnoid mater, pia mater

What do the meninges do? - ----Answers---They serve as a protective covering of the CNS

What is the dura mater? - ----Answers---Dura Mater is the most superficial and tough of the meninges. It is composed of a double layer of connective tissue that attaches firmly to the skull

What is the arachnoid mater? - ----Answers---•Loosely covers the brain

•Creates an area called the subarachnoid space

•This space is filled with cerebrospinal fluid (a protective fluid) and blood vessels

What is the pia mater? - ----Answers---This is the internal layer that attaches to the cerebral cortex

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