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Ch. 12 The Central Nervous System
Hoehn - Marieb Human Anatomy & Physiology, 12th edition
Hoehn, Haynes, Abbott12th EditionMarieb Human Anatomy & PhysiologyISBN: 9780138242732Not the one you use?Change textbook
All textbooksHoehn, Haynes, Abbott 12th EditionCh. 12 The Central Nervous SystemProblem 1
Chapter 12, Problem 1

The primary motor cortex, Broca's area, and the premotor cortex are located in which lobe?
a. Frontal
b. Parietal
c. Temporal
d. Occipital

Verified step by step guidance
1
Step 1: Understand the functions and locations of the brain regions mentioned: the primary motor cortex, Broca's area, and the premotor cortex.
Step 2: Recall that the primary motor cortex is responsible for voluntary muscle movements and is located in the precentral gyrus of the frontal lobe.
Step 3: Recognize that Broca's area is involved in speech production and is typically found in the left frontal lobe, near the primary motor cortex.
Step 4: Know that the premotor cortex is involved in planning and coordinating movements and is also situated in the frontal lobe, just anterior to the primary motor cortex.
Step 5: Conclude that since all three areas are located in the frontal lobe, the correct answer is the frontal lobe (option a).

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Primary Motor Cortex

The primary motor cortex is a brain region responsible for voluntary movement control. It is located in the precentral gyrus of the frontal lobe and sends signals to muscles to initiate movement.
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Primary Motor Cortex & Primary Somatosensory Cortex

Broca's Area

Broca's area is involved in speech production and language processing. It is typically found in the left frontal lobe, near the primary motor cortex, and plays a key role in forming coherent speech.
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Important Areas of the Cerebral Cortex

Premotor Cortex

The premotor cortex is located anterior to the primary motor cortex in the frontal lobe. It is involved in planning and coordinating complex movements before they are executed.
Recommended video:
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Primary Motor Cortex & Primary Somatosensory Cortex
Related Practice
Textbook Question

Cerebrospinal fluid is formed by

a. Arachnoid granulations

b. Dura mater

c. Choroid plexuses

d. All of these

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Textbook Question

The innermost layer of the meninges, delicate and adjacent to the brain tissue, is the

a. Dura mater

b. Corpus callosum

c. Arachnoid mater

d. Pia mater

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Textbook Question

Choose the correct term from the key to respond to the statements describing various brain areas.

Key:

a. Cerebellum

b. Corpora quadrigemina

c. Corpus callosum

d. Striatum

e. Hypothalamus

f. Medulla

g. Midbrain

h. Pons

i. Thalamus 

________ (1) basal nuclei involved in fine control of motor activities  

________ (2) region where there is a crossover of fibers of descending pyramidal tracts  

________ (3) control of temperature, autonomic nervous system reflexes, hunger, and water balance 

________ (4) houses the substantia nigra and cerebral aqueduct 

________ (5) relay stations for visual and auditory stimuli input; found in midbrain 

________ (6) houses vital centers for control of the heart, respiration, and blood pressure 

________ (7) brain area through which all the sensory input is relayed to get to the cerebral cortex 

________ (8) brain area most concerned with equilibrium, body posture, and coordination of motor activity

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