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 B
Explanation
a. The plasma membrane is composed of a bilayer of protein molecules: This is incorrect. The plasma membrane is primarily composed of a bilayer of phospholipids, with proteins interspersed within this bilayer.
b. The plasma membrane is selectively permeable: This is correct. The plasma membrane regulates the entry and exit of substances, allowing certain molecules to pass while restricting others.
c. The plasma membrane does not participate in cellular activities: This is incorrect. The plasma membrane is actively involved in various cellular activities, including signaling, transport, and maintaining homeostasis.
d. The plasma membrane receptors are specialized lipids: This is incorrect. Receptors on the plasma membrane are typically proteins, not lipids, which are involved in signal transduction and cellular communication.
Correct Answer is A
Explanation
a. Cartilage: Cartilage is a type of connective tissue found at the ends of bones in joints. It provides a smooth, elastic surface that cushions the bones and reduces friction during movement.
b. Tendon: Tendons are tough, fibrous bands that connect muscles to bones. They do not reduce friction at joints.
c. Fibrillin: Fibrillin is a protein component of connective tissue, but it's not a specific structure like cartilage and doesn't directly reduce friction in joints.
d. Osteocytes: Osteocytes are mature bone cells. They are not located at joints and don't play a role in friction reduction.
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