Cells and Tissues

Blood contains cells separated by a liquid matrix. Choices A and B are epithelial and nervous tissues.

The PM is indeed made of two layers, but they are phospholipid (not glycoprotein) molecules.

Being close packed is a property of epithelial tissue. In CT the cells are widely spaced, being separated by the ground substance.

Choice C refers to cell types; B is a list of epithelial tissue. Protein is applied to molecules.

This is the definition of leak channels. They may be “gated” which means shut until stimulated to open. Choice A refers to facilitated diffusion.

Deep fascia is a fibrous connective tissue that surrounds and penetrates into the muscles, as well as surrounding bones, nerves and blood vessels. Muscle epimysium is an example of deep fascia. Choice C is referring to superficial fascia.

The plasma membrane is made of lipid and separates the aqueous intracellular fluid from the aqueous extracellular fluid. Substances cannot enter or leave the cell unless they are lipid soluble or by endo-/exocytosis or have a membrane protein pore or transport mechanism that can move them through the membrane.

Mesothelium is simple squamous epithelium that is found in serous membranes.

“Fluid” implies the structure can move and change (not like a brick wall); mosaic refers to the presence of proteins scattered among the glycolipids.

The description indicates epithelial cells and their basement membrane.