2026 QUESTIONS WITH SOLUTIONS
GRADED A+
●● histology. Answer: the study of tissues; structural basis for
understanding organ physiology
●● tissue. Answer: a group of similar cells that perform the same
function; consists of cells and matrix (fibers and ground substance)
●● tight junctions. Answer: Membranes of neighboring cells are pressed
together, preventing movement of fluid between cells
●● gap junctions. Answer: (communicating junctions) provide
cytoplasmic channels between adjacent cells; allow materials to move
from one cell directly into a neighboring cell
●● adhering junctions/desmosomes. Answer: cells linked by protein
plaques; resist tension; prevents the cells from being pulled apart
●● epithelial tissue. Answer: function= protection, excretion, absorption,
secretion. Location= cover body surface, cover and line internal organs,
compose glands. characteristics= lack blood vessels (avascular), cells
readily divide, cells are tightly packed, polarity, innervated
, ●● connective tissue. Answer: function= bind, support, protect, fill
spaces, store fat, and produce blood cells. location= widely distributed
throughout the body. characteristics= good blood supply, cells are farther
apart, have extracellular matrix in between
●● muscle tissue. Answer: function= movement. location= attached to
bones, in the walls of hollow internal organs, heart. characteristics=
contract in response to stimuli
●● nervous tissue. Answer: function= conduct impulses for
coordination, regulation, integration, and sensory reception. location=
brain, spinal cord, nerves. characteristics= communicate with each other
and other body parts
●● basement membrane of epithelial tissues. Answer: anchors
epithelium to underlying connective tissue
●● simple. Answer: a single layer of cells
●● stratified. Answer: more than one layer of cells
●● pseudostratified columnar. Answer: single layer of cells of differing
heights, some not reaching the free surface; nuclei seen at different
levels; may contain goblet cells and have cilia