The contraction cycle is triggered by the rise in ________ released from the sarcoplasmic reticulum (SR).

A) Ca2+
B) Na+
C) K+


A) Ca2+

Anatomy & Physiology

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Which cranial nerve sends branches to the heart?

A) VIII B) IX C) X D) XI

Anatomy & Physiology

Rhodopsin is found in ____ cells

A) rod B) cone C) olfactory receptor D) lens

Anatomy & Physiology

What is the term that refers to a body standing erect with hands at the sides and palms facing forward?

a. Anatomical Position (western medicine). b. Anatomical Position (oriental medicine) c. Prone. d. Supine.

Anatomy & Physiology

The sleep-wake cycle is controlled by interactions among how many neural systems?

a. 1 b. 2 c. 3 d. 4 e. 5

Anatomy & Physiology