Why are infections always a serious threat after a severe burn or abrasion?

A layer of glycoproteins and a network of fine protein filaments that prevents the movement of proteins and other large molecules from the connective tissue to the epithelium describe

(a) Interfacial canals

(b) The basement membrane

(c) The reticular lamina

(d) Areolar tissue

(e) Squamous epithelium

Why does damaged cartilage heal slowly?

(a) Chondrocytes cannot be replaced if killed, and other cell types must take their place.

(b) Cartilage is avascular, so nutrients and other molecules must diffuse to the site of injury.

(c) Damaged cartilage becomes calcified, thus blocking the movement of materials required for healing.

(d) Chondrocytes divide more slowly than other cell types, delaying the healing process.

(e) Damaged collagen cannot be quickly replaced, thereby slowing the healing process.

List the similarities and differences among the three types of muscle tissue.

Assuming that you had the necessary materials to perform a detailed chemical analysis of body secretions, how could you determine whether a secretion was merocrine or apocrine?

During a lab practical, a student examines a tissue that is composed of densely packed protein fibers that run parallel to each other and form a cord. There are no striations, but small nuclei are visible. The student identifies the tissue as skeletal muscle. Why is the student's choice wrong, and what tissue is he probably observing?

While in a chemistry lab, Jim accidentally spills a small amount of a caustic (burning) chemical on his arm. What changes in the characteristics of the skin would you expect to observe, and what would cause these changes?