Refer to the Figure

question 172

Multiple Choice

Refer to the figure. Based on the figure, which represents the correct direction of the formation of the heartbeat?

• A) 1  2  3  4  5  6 and 7
• B) 1  3  6 and 7  2  4  5
• C) 1  6 and 7  5  4  3  2
• D) 1  6 and 7  3  2  4  5
• E) 6  5  4  3  2  7 and 1

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Definitions:

Intercostal Muscles

Muscles located between the ribs that assist with the breathing process by expanding and contracting the ribcage.

External Iliac Vein

A large vein in the pelvic region that carries deoxygenated blood from the lower limbs back to the heart.

Iliac Vein

A vein in the pelvis that carries blood from the lower limbs and the pelvis back to the heart.

Posterior Vena Cava

Also known as the inferior vena cava, it is a large vein that carries deoxygenated blood from the lower half of the body to the heart.