Corticospinal tract

Corticospinal tract

Assessment

Interactive Video

Health Sciences, Biology

University

Hard

Created by

Wayground Content

FREE Resource

The video tutorial by Dr. Morton explains the corticospinal tract, a primary motor pathway for voluntary control, detailing the roles of upper and lower motor neurons. It covers the decussation process, neuromuscular junction, and the differences between pyramidal and extrapyramidal systems. The tutorial also discusses the effects of lesions on motor function, highlighting clinical signs like the Babinski sign.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of the corticospinal tract?

Sensory perception

Voluntary motor control

Involuntary reflexes

Autonomic regulation

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where do upper motor neurons originate?

Spinal cord

Brainstem

Cerebellum

Cerebral cortex

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the motor homunculus represent?

A map of sensory areas

A map of auditory areas

A map of visual areas

A map of motor control areas

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What percentage of upper motor neurons decussate at the pyramids?

90%

10%

50%

70%

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What neurotransmitter is involved at the neuromuscular junction?

Dopamine

Serotonin

Acetylcholine

GABA

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of the basal ganglia in motor control?

Directly controlling muscle contraction

Providing input to the thalamus

Controlling sensory input

Regulating heart rate

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of a lesion above the decussation point?

Contralateral deficits

Ipsilateral deficits

Bilateral deficits

No deficits

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