What part of the heart's conduction system acts as the primary pacemaker?

A. Bundle of His
B. Purkinje fibers
C. SA node
D. AV node


Answer: C

Anatomy & Physiology

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Which of the following will increase flow in a vessel the most?

A) increase radius by 1 unit B) decrease length by 1 unit C) decrease viscosity by 1 unit D) All have the same effect on flow.

Anatomy & Physiology

The volume of air available for gas exchange per minute is called the ________.

A. vital capacity B. respiratory rate C. minute respiratory volume D. alveolar ventilation E. functional residual capacity

Anatomy & Physiology

Describe the structure of a nerve plexus and explain the advantage of this structure to its function

What will be an ideal response?

Anatomy & Physiology

Translation

A. takes place in the nucleus. B. requires three types of DNA. C. requires the pairing of codons on mRNA with anticodons on tRNA. D. involves synthesis of RNA from DNA molecules. E. requires replication of DNA.

Anatomy & Physiology