The Systemic Circuit Is Complete When ____

question 8

Multiple Choice

The systemic circuit is complete when ____.

• A) oxygen-depleted blood collects in veins
• B) oxygen-rich blood collects in veins
• C) blood enters the pulmonary veins
• D) blood enters the aorta
• E) blood enters the right atrium

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Definitions:

Axons

Long, slender projections of nerve cells that transmit electrical impulses away from the neuron's cell body to other neurons, muscles, or glands.

Reflex Pathways

The neural circuits involved in involuntary responses to certain stimuli, enabling rapid reactions without conscious brain involvement.

Motor Neurons

Nerve cells forming part of the nervous system that transmit signals from the brain and spinal cord to muscles or glands, causing them to act.

Interneurons

Neurons within the brain and spinal cord; they communicate internally and process information between the sensory inputs and motor outputs.