Which RBC parameter describes the variation in the volume of the RBCs in a blood sample?

Extensibility, one of the four properties of a muscle tissue, is defined as

a. the capacity of a muscle to be lengthened by an outside force. b. the ability of a muscle to forcibly shorten when stimulated by motor nerves. c. the capacity of a muscle to return to a normal resting length after being extended. d. the ability of a muscle to respond to stimuli.

The purpose of the heart is to ________ throughout the body

A) eliminate waste from B) bring oxygen into the body and to remove carbon dioxide C) pump CO2-rich blood D) pump oxygen-rich blood