The sympathetic nervous system can increase heart rate, while the parasympathetic nervous system can decrease heart rate. This is is example of which of the following?

Complementary effectors
Permissive effectors
Antagonistic effectors
Dualistic effectors


Antagonistic effectors

Anatomy & Physiology

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If a clinician were looking to harvest bone marrow that made blood cells, which bone of a donor would be sampled?

A.  Distal head of femur B.  Os coxa C.   Phalanges D.  Distal humerus

Anatomy & Physiology

Urea transport in the collecting duct is a(n) ________ process.

A. passive B. endocytosis C. exocytosis D. active

Anatomy & Physiology

We enjoy sunbathing because it stimulates keratinocytes to release

A. keratin. B. collagen. C. beta endorphin. D. carotene.

Anatomy & Physiology

Which fetal shunt bypasses the lungs by directly connecting the right atrium and the left atrium?

A) ligamentum arteriosum B) umbilical vein C) foramen ovale D) ductus arteriosus E) ductus venosus

Anatomy & Physiology