Organ Histology Flashcards
7 cards from real Histology Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Organ Histology flashcards as text
The tunica media of large elastic arteries such as the aorta is characterized by:
Answer: Alternating layers of elastic lamellae and smooth muscle
Large elastic arteries have a thick media composed of concentric elastic lamellae alternating with smooth muscle cells that buffer pulsatile blood flow.
In the small intestine, which cells secrete defensins and lysozyme to protect the intestinal crypts?
Answer: Paneth cells
Paneth cells reside at the base of intestinal crypts and secrete antimicrobial peptides including defensins and lysozyme.
The glomerular podocyte foot processes are interconnected by which specialized junction?
Answer: Slit diaphragm
Slit diaphragms bridge adjacent foot processes and are composed of nephrin, podocin, and other proteins, forming a key filtration barrier.
Which histological stain is most appropriate for identifying reticular fibers forming the framework of lymph nodes and spleen?
Answer: Gomori reticulin (silver impregnation)
Gomori reticulin stain selectively impregnates type III collagen (reticular fibers) with silver, rendering them black.
The zona pellucida surrounding an oocyte is composed primarily of:
Answer: Glycoproteins ZP1, ZP2, and ZP3
The zona pellucida is a glycoprotein coat synthesized by the oocyte, consisting of ZP1, ZP2, and ZP3 that mediate sperm binding.
In the testis, which cells form the blood–testis barrier by creating tight junctions between adjacent cells?
Answer: Sertoli cells
Sertoli cell tight junctions divide the seminiferous epithelium into basal and adluminal compartments, creating an immunologically privileged site.
The portal triad of the liver classically contains which three structures?
Answer: Portal vein branch, hepatic artery branch, bile ductule
Each portal triad contains a branch of the portal vein, hepatic artery, and bile ductule embedded in loose connective tissue.