The atomic number of an atom equals the number of ________, and the atomic weight equals the ________.

A. neutrons; number of protons
B. protons; number of protons plus neutrons
C. neutrons; number of protons plus electrons
D. protons; weight of all the electrons


Answer: B

Anatomy & Physiology

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After birth, the ductus arteriosus constricts and becomes the ligamentum arteriosum

Indicate whether the statement is true or false

Anatomy & Physiology

The arteriole that delivers blood to the glomerulus is the __________.

a) interlobular arteriole b) afferent arteriole c) efferent arteriole d) peritubular arteriole

Anatomy & Physiology

Passage of materials in and out of the bloodstream in tiny vesicles through the processes of endocytosis and exocytosis is:

A) passive transport B) diffusion C) transcytosis D) bulk flow

Anatomy & Physiology

When piercing a peripheral nerve with a recording microelectrode, the structure encountered by the electrode after penetration of the connective tissue of the epineurium is the:

a. Endoneurium b. Myelin sheath c. Perineurium d. Plasma membrane of an axon e. Schwann cell nucleus

Anatomy & Physiology