The Muscularis Externa Contains Which of the Following Muscle Groups

question 161

Multiple Choice

The muscularis externa contains which of the following muscle groups?

• A) an outer longitudinal layer that requires neural input for contraction
• B) a muscularis mucosae, which lubricates as it contracts
• C) an inner circular layer capable of slow -wave potentials only
• D) both an inner circular and an outer longitudinal layer
• E) an inner circular and outer longitudinal layer, and a muscularis mucosae

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Definitions:

Motor Neurons

Nerve cells that transmit signals from the brain and spinal cord to muscles, stimulating them to contract and produce movement.

Message

A piece of communication or information conveyed from one person or group to another, often through a specific medium like speech, text, or images.

Branchlike Structures

Refers to dendrites, the extensions of neurons that receive signals from other neurons or sensory cells.

Dendrites

In a neuron, the branch-like extensions of the cell body that receive signals from other neurons.