Examlex
During recent geologic time, Death Valley was occupied by a large lake called ________.
GI Tract
The gastrointestinal tract, a system of organs responsible for digestion and absorption of food, extending from the mouth to the anus.
Autonomic Nervous System
The part of the nervous system that controls involuntary actions of the body, including heartbeat, digestion, and respiratory rate.
Neurotransmitters
Chemicals that transmit signals across a synapse from one neuron to another 'target' neuron, muscle cell, or gland cell.
Somatic Nervous System
Part of the peripheral nervous system associated with the voluntary control of body movements through the action of skeletal muscles.
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