Which of the following is the area of the brain that contains the medulla, pons, and midbrain?
Cerebellum
Brain stem
Ventricles
Chord plexus
The Correct Answer is B
a: Cerebellum - The cerebellum is responsible for coordination and balance but is not where the medulla, pons, and midbrain are located.
b. Brainstem-The brainstem is composed of the medulla oblongata, pons, and midbrain. It regulates many basic physiological functions such as heart rate, breathing, and sleep.
c: Ventricles - The ventricles are fluid-filled cavities within the brain, not regions containing the medulla, pons, and midbrain.
d: Choroid plexus - The choroid plexus produces cerebrospinal fluid (CSF) within the ventricles of the brain, but it is not where the medulla, pons, and midbrain are located.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
a. Pancreas: The pancreas has both endocrine functions (releasing insulin and glucagon into the blood) and exocrine functions (secreting digestive enzymes into the small intestine).
b. Pituitary: This is an endocrine gland only, releasing hormones into the bloodstream.
c. Thyroid: This is also an endocrine gland, producing hormones like thyroxine and triiodothyronine.
d. Hypothalamus: The hypothalamus primarily functions as part of the endocrine system, regulating the pituitary gland and releasing hormones into the blood.
Correct Answer is B
Explanation
a. Cell body: The cell body is the main part of the neuron containing the nucleus and other organelles. It does not directly transmit impulses.
b. Axon: The axon is a long fiber that carries electrical impulses away from the cell body towards other neurons or muscles.
c. Synapse: A synapse is a junction between two neurons where nerve impulses are transmitted. The axon of one neuron transmits an electrical signal to the dendrite or cell body of another neuron across a small gap. Neurotransmitters are released from the presynaptic neuron and bind to receptors on the postsynaptic neuron, either exciting or inhibiting it.
d. Dendrite: Dendrites are short, branching fibers that receive signals from other neurons and transmit them towards the cell body.
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