Proteins in the cell membrane that bind hormones and relay messages into the interior of the cell __________.

A)are known as transmembrane proteins
B)provide cell identification
C)perform a function known as signal transduction
D)are known as carrier proteins


C)perform a function known as signal transduction

Anatomy & Physiology

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Oxygen-poor blood passes through the ________.

A. right AV (tricuspid) and pulmonary valves B. left AV (mitral) valve only C. left AV (mitral) and aortic valves D. pulmonary and aortic valves E. right AV (tricuspid) valve only

Anatomy & Physiology

A sarcomere is ________

A) the nonfunctional unit of skeletal muscle B) the contractile unit between two Z discs C) the area between two intercalated discs D) the wavy lines on the cell, as seen in a microscope E) a compartment in a myofilament

Anatomy & Physiology

The syndrome caused by hypersecretion of the adrenal cortex, which results in excessive circulating cortisol levels, fatigue, muscular weakness, and changes in body appearance is called ________

A) Cushing's syndrome B) Addison's disease C) Hashimoto thyroiditis D) None of the above

Anatomy & Physiology

A patient with a low RBC count receives vitamin B12 injections every 2 weeks. Why?

A. This patient is training for a triathlon. B. This patient is anemic and has low iron. C. Parietal cells in this patient's stomach have ceased producing intrinsic factor. D. This patient's parietal cells have stopped secreting HCl.

Anatomy & Physiology