The SA Node

question 21

Multiple Choice

The SA node

• A) Directly excites ventricular muscle
• B) Conducts electrical signals from autonomic nerves
• C) Lies in the wall of the left atria
• D) Relays electrical signals from autonomic nerves
• E) Is the cardiac pacemaker

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Definitions:

Adhesives

Substances used to bind materials together by surface attachment.

Preterm Newborns

Infants born before the completion of 37 weeks of gestation, often requiring specialized medical care.

Solvents

Substances, typically liquids, used to dissolve other substances, often used in chemical and pharmaceutical processes.

Subtle Seizures

Seizures that might not have obvious signs and are therefore difficult to detect without close medical assessment.