What Is the Role of Pacemaker Cells

question 22

Multiple Choice

What is the role of pacemaker cells?

• A) They rapidly develop action potentials.
• B) They are shallow invaginations of the plasma membrane.
• C) They maintain relatively constant tension for a period of time.
• D) They are part of the intracellular cytoskeleton.
• E) They are enzymes that remove phosphate from myosin.

Analyze the direction (upward or downward) in which a parabola opens.

Graph quadratic functions accurately.

Write the equation of a parabola given specific conditions.

Determine the intercepts of quadratic functions.

---

Definitions:

Ultrasound

A medical imaging technique that uses high-frequency sound waves to produce images of structures within the body.

Pregnant Patient

A female who is expecting a baby and is under medical care for her pregnancy.

Vagina

A tubular organ that extends from the uterus to the labia.

Wet Mount

A sample preparation method for microscopic examination involving placing a liquid specimen between a slide and cover slip.