Epithelial and Connective Tissue Quiz

Epithelial Junctions

• Tight junctions are located closer to the apical surface of epithelial cells in the intestine.
• Desmosomes are a type of adhering junction.
• Zonula adherens are another type of adhering junction.
• Gap junctions allow for communication between adjacent cells.

Modes of Secretion

• Merocrine secretion involves the release of products without loss of cellular material.
• Holocrine secretion involves the total disintegration of the cells to release products.
• Apocrine secretion involves the release of apical portions of the cell with some cytoplasm.
• Cytocrine secretion involves the release of secretory vesicles into the extracellular space or the uptake of particles from the exterior.

Locations of Columnar Pseudostratified Epithelium

• Columnar pseudostratified epithelium is found in the excretory ducts of sweat glands.

Connective Tissue Proper

• Connective tissue proper may contain lymphocytes, polysaccharides, and macrophages.
• Connective tissue proper does not contain mast cells.

Epithelium Characteristics

• Epithelial tissues generally have a free apical surface and are attached to a basement membrane.

Plasma Cells

• Plasma cells originate from B lymphocytes.

Endosteum

• Endosteum is composed of a single layer of cells.

Dense Bodies

• Dense bodies are found in smooth muscle fibers.

Secondary Lymphoid Organs

• Secondary lymphoid organs include bone marrow and thymus.

Langerhans Cells

• Langerhans cells are antigen-presenting cells found in the epidermis.

Gall Bladder Epithelium

• The epithelium of the gall bladder is stratified squamous.

Pancreatic Islets

• The ducts of the pancreatic islets have simple cuboidal epithelium.

Kidneys

• Kidneys are covered by connective tissue that may contain smooth muscle fibers.

Medullary Rays of the Kidneys

• Medullary rays are situated within the kidney medulla and include parts of the collecting ducts.

Ductus Epididymidis

• The epithelium of the ductus epididymidis is pseudostratified, containing two types of cells.

Urethra Epithelium

• The epithelium of the urethra is mostly transitional, with patches of simple columnar and stratified epithelium.

Corona Radiata

• Corona radiata is a structure surrounding the oocyte.

Tertiary Follicles

• Structures called tertiary follicles contain a space called the antrum.

Respiratory System Origin

• The respiratory system originates from endoderm and mesoderm.

Neural Crest Cells

• Neural crest cells originate from ectoderm.

Mesenchymal Cells

• Mesenchymal cells can differentiate into other cell types of connective tissue. -Mesenchymal cells are components of sweat glands.
• Mesenchymal cells are found in epithelial tissue.
• Mesenchymal cells are found inside the seminiferous tubules.

Equine Hoof

• The primary epidermal laminae are made of loose connective tissue.
• The secondary epidermal laminae are cellular and contribute to the production of the primary epidermal laminae.

Brush Border

• The brush border in the intestinal epithelium consists of microvilli.

Immature Bone

• Immature bone is also known as woven bone or primary bone.

Tertiary Follicle Cavity

• The cavity within a tertiary follicle is called the antrum.

Unicellular Glands

• Goblet cells are unicellular glands.

Megakaryocytes

• Platelets originate from megakaryocytes.

Loose Connective Tissue Cells

• Parietal cells are not found in loose connective tissue.

Muscle Covering

• The outer connective tissue covering a muscle is the epimysium.

Renal Medullary Rays

• Medullary rays are located within the medulla of the kidney and do not exist in multilobular kidneys.
• The medullary rays of the kidneys contain parts of collecting ducts.

First Fetal Membrane in Birds

• The first fetal membrane to develop in birds is the amnion.

Spermatocytes

• Late elongated spermatogonia have tails.

Rete Testis

• The rete testis is lined by simple squamous or columnar epithelium.

Prostate

• The prostate is a tubuloacinar gland.

Hypoblast

• The hypoblast contributes to the formation of the endoderm and extraembryonic membranes.