Multiple Choice
Which of the following best describes the difference between anterior and posterior in anatomical terminology?
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1. Introduction to Anatomy & Physiology
Introduction to Directional Terms
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Which of the following is located within the precentral gyrus of the frontal lobe of the cerebrum?
A
Primary somatosensory cortex
B
Broca's area
C
Primary motor cortex
D
Wernicke's area
Verified step by step guidance1
Understand the anatomy of the brain: The cerebrum is divided into lobes, including the frontal lobe, which contains several important functional areas.
Learn the location and function of the precentral gyrus: The precentral gyrus is a ridge located in the frontal lobe, immediately anterior to the central sulcus. It is responsible for motor control.
Identify the primary motor cortex: The primary motor cortex is located within the precentral gyrus and is involved in voluntary movement control by sending signals to skeletal muscles.
Differentiate the primary motor cortex from other areas: The primary somatosensory cortex is located in the postcentral gyrus (parietal lobe), Broca's area is involved in speech production (frontal lobe but not in the precentral gyrus), and Wernicke's area is involved in language comprehension (temporal lobe).
Conclude that the correct answer is the primary motor cortex, as it is the functional area located within the precentral gyrus of the frontal lobe.
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