Which of the Following Has Giant Unmyelinated Axons, Up to 1

question 76

Multiple Choice

Which of the following has giant unmyelinated axons, up to 1 mm in diameter, that enable rapid response when escaping from predators?

• A) Horses
• B) Lizards
• C) Squirrels
• D) Birds
• E) Squids

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Definitions:

Latch State

A phase in muscle contraction where the muscle remains tense without much energy consumption, commonly found in smooth muscle.

Smooth Muscle Contraction

The involuntary process by which smooth muscles found in the walls of internal organs contract and relax, controlled by the autonomic nervous system.

Myosin Phosphatase

An enzyme that plays a critical role in muscle relaxation by dephosphorylating myosin light chains.

Hyperpolarization

An increase in the membrane potential of a cell, making it more negative and less likely to fire an action potential.