Communication is a primary function of _______ tissue.

The epiglottis is made up of cartilage and is highly flexible. When you swallow it bends to cover your larynx and protect your lungs. The epiglottis is made of __________. 

When you eat sugary foods your blood glucose levels increase. Free nerve endings in your blood monitor the levels of glucose and send signals to the hypothalamus. The hypothalamus compares the levels to normal blood glucose levels. When the levels are high the hypothalamus triggers the pancreas to release insulin, which lowers glucose levels. The hypothalamus an example of a _______ in this situation.

The movement of solid materials out of the cell is ____________.

A connective tissue with a matrix that contains large amounts of water and relatively few cells is ___.

The return of lymph to the lymphatic ducts is aided by skeletal muscle contractions, diaphragm movement, and one-way valves.

Which of the following best explains how diffusion contributes to capillary exchange?

Which of the following best describes the primary function of vascular anastomoses?

Where is the spleen located in the human body?

Which of the following vessels or structures rely on one-way valves to maintain unidirectional flow?