What Type of Chemical Messenger Is Released from Neurons to Activate

question 45

Multiple Choice

What type of chemical messenger is released from neurons to activate an adjacent cell?

• A)paracrine
• B)neurotransmitter
• C)autocrine
• D)endocrine

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Definitions:

Latissimus Dorsi

A broad muscle in the back that helps in movement of the arms and the torso.

Rhomboid Major

A skeletal muscle located in the upper back that connects the spine to the shoulder blades, responsible for retracting and rotating the scapula.

Trapezius

A large, triangular muscle extending over the back of the neck and shoulders, involved in moving, rotating, and stabilizing the scapula (shoulder blade) and extending the neck.

Pronator Teres

A muscle in the forearm that helps rotate the forearm into a palm-down position.