Epithelial and Connective Tissue Quiz

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Questions and Answers

The junction that is closer to the upper part of epithelial cells in the intestine is:

Tight junction (correct)

Desmosome

Gap junction

Zonula adherens

The mode of secretion by which there is loss of cellular material is called:

Holocrine (correct)

Apocrine

Merocrine

Cytocrine

Columnar pseudostratified epithelium can be found in:

Arteries

Heart

Respiratory system (correct)

Excretory ducts of sweat glands

Which is NOT correct regarding connective tissue proper:

Does not contain mast cells Signup and view all the answers

Which is correct regarding epithelium:

In the stratified cuboidal epithelium, only the top layer has cuboidal cells, while the deep layers have squamous cells. Signup and view all the answers

Which is true about plasma cells:

They originate from B lymphocytes. Signup and view all the answers

Endosteum:

Is composed of one layer of cells. Signup and view all the answers

'Dense bodies' are found in the cytoplasm of:

Smooth muscle fibers Signup and view all the answers

Secondary lymphoid organs are:

Bone marrow and spleen. Signup and view all the answers

Langerhans cells are:

Antigen-presenting cells found in the epidermis. Signup and view all the answers

The epithelium of the gall bladder is:

Simple columnar. Signup and view all the answers

Which is correct regarding the pancreatic islets:

There are sinusoids in the pancreatic islets. Signup and view all the answers

Which is correct regarding kidneys:

Kidneys are covered by connective tissue that may contain smooth muscle fibers. Signup and view all the answers

The medullary rays of the kidneys:

Are inside the medulla of the kidney. Signup and view all the answers

The epithelium of the renal pelvis is:

Transitional. Signup and view all the answers

Which is correct regarding the ductus epididymidis:

The epithelium of the ductus epididymidis is simple columnar. Signup and view all the answers

The epithelium of the urethra is:

Mostly transitional with patches of simple columnar and stratified. Signup and view all the answers

Corona radiata is:

Found around the secondary follicles. Signup and view all the answers

The respiratory system originates from:

Endoderm and mesoderm. Signup and view all the answers

The origin of neural crest cells is:

Ectodermic. Signup and view all the answers

Mesenchymal cells:

Are cells that can differentiate into other cell types of the connective tissue Signup and view all the answers

In the equine hoof:

The primary epidermal laminae are made of loose connective tissue Signup and view all the answers

What forms the brush border in the intestinal epithelium of mammals?

Microvilli Signup and view all the answers

How do we call the immature bone?

Woven/primary bone Signup and view all the answers

What do we call the cavity within a tertiary follicle?

Antrum Signup and view all the answers

Which of the following is a unicellular gland?

Goblet cell Signup and view all the answers

What originates from a megakaryocyte?

Platelet Signup and view all the answers

Which one of these cells is not a cell type found in loose connective tissue?

Parietal cell Signup and view all the answers

Which is the outer connective tissue covering a muscle?

Epimysium Signup and view all the answers

Which is correct:

Kupffer cells are found in the perisinusoidal space. Signup and view all the answers

Intercalated discs in the cardiac tissue contain:

2 types of junctions Signup and view all the answers

What makes up the Juxtaglomerular apparatus?

Both macula densa and Juxtaglomerular cells Signup and view all the answers

In which of the following organs, the epithelium is/can be pseudostratified?

Ducts of sweat glands Signup and view all the answers

Which is correct about the pancreatic islets:

The ducts of the pancreatic islets have simple cuboidal epithelium. Signup and view all the answers

Which is correct about spermatocytes:

Sertoli cells have an oval nucleus Signup and view all the answers

Rete testis - which is true?

Contain many Sertoli cells Signup and view all the answers

Prostate:

Is a tubuloacinar gland Signup and view all the answers

The hypoblast contributes to the formation of:

Endoderm Signup and view all the answers

The first fetal membrane that develops in birds:

Yolk sac Signup and view all the answers

Study Notes

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.

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Description

Test your knowledge on epithelial junctions, modes of secretion, and connective tissue proper. This quiz covers the characteristics and functions of various types of tissues, specifically focusing on their anatomical features and secretion methods. Perfect for students of anatomy and physiology.