The enzyme renin is responsible for the activation of

A) angiotensin I.
B) cortisol.
C) erythropoietin.
D) atrial natriuretic peptide.
E) adrenaline.


Answer: A

Anatomy & Physiology

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Which structures are responsible for creating a direct electrical connection between cardiac muscle cells?

A) gap junctions B) maculae adherens C) intercalated discs D) desmosomes E) fascia adherens

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Which muscle is used when giving your grandmother a kiss on the cheek?

A) Orbicularis oculi B) Orbicularis oris C) Buccinator D) Masseter

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The structure in which cells repeatedly divide to produce new cells that form a hair is the

A. hair matrix. B. Merkel region. C. hair shaft. D. lunula.

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