Which of the following provide the greatest surface area for gas exchange?

A) alveolar sacs
B) alveoli
C) respiratory bronchioles
D) alveolar ducts


B) alveoli

Anatomy & Physiology

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Which of the following is NOT a major job of the digestive system?

A) acid-base homeostasis B) fluid and electrolyte homeostasis C) manufacturing blood cells D) ingestion of vitamins and minerals

Anatomy & Physiology

In opsonization,

A) a pathogen is coated by proteins to facilitate its destruction by neutrophils and macrophages. B) the cell wall of a pathogen is breached, leading to death of the cell. C) MHC II glycoproteins display a fragment of an alien cell. D) antigens bind to antibodies to become antigen-antibody complexes. E) antibodies tie many antigens together.

Anatomy & Physiology

Sensory receptors sense only stimuli external to the body, such as light, sound waves, smell, and touch

Indicate whether the statement is true or false

Anatomy & Physiology

Which of the following has NO relationship?

a. peptide hormones and secretory granules b. steroids and lipid droplets c. Catecholamines and adrenal cortex d. peptide hormones and rough endoplasmic reticulum e. thyroid hormones and lipophilic molecules

Anatomy & Physiology