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:

    <p>Does not contain mast cells (A)</p> Signup and view all the answers

    Which is correct regarding epithelium:

    <p>In the stratified cuboidal epithelium, only the top layer has cuboidal cells, while the deep layers have squamous cells. (A), Mesothelium is stratified squamous sometimes. (C), Transitional epithelium is a type of stratified epithelium. (D)</p> Signup and view all the answers

    Which is true about plasma cells:

    <p>They originate from B lymphocytes. (A)</p> Signup and view all the answers

    Endosteum:

    <p>Is composed of one layer of cells. (B)</p> Signup and view all the answers

    'Dense bodies' are found in the cytoplasm of:

    <p>Smooth muscle fibers (C)</p> Signup and view all the answers

    Secondary lymphoid organs are:

    <p>Bone marrow and spleen. (C), Spleen and lymph nodes. (D)</p> Signup and view all the answers

    Langerhans cells are:

    <p>Antigen-presenting cells found in the epidermis. (C)</p> Signup and view all the answers

    The epithelium of the gall bladder is:

    <p>Simple columnar. (C)</p> Signup and view all the answers

    Which is correct regarding the pancreatic islets:

    <p>There are sinusoids in the pancreatic islets. (B), The ducts of the pancreatic islets have simple cuboidal epithelium. (C)</p> Signup and view all the answers

    Which is correct regarding kidneys:

    <p>Kidneys are covered by connective tissue that may contain smooth muscle fibers. (B)</p> Signup and view all the answers

    The medullary rays of the kidneys:

    <p>Are inside the medulla of the kidney. (A), Contain parts of the collecting ducts. (C)</p> Signup and view all the answers

    The epithelium of the renal pelvis is:

    <p>Transitional. (D)</p> Signup and view all the answers

    Which is correct regarding the ductus epididymidis:

    <p>The epithelium of the ductus epididymidis is simple columnar. (A)</p> Signup and view all the answers

    The epithelium of the urethra is:

    <p>Mostly transitional with patches of simple columnar and stratified. (A)</p> Signup and view all the answers

    Corona radiata is:

    <p>Found around the secondary follicles. (A)</p> Signup and view all the answers

    The respiratory system originates from:

    <p>Endoderm and mesoderm. (D)</p> Signup and view all the answers

    The origin of neural crest cells is:

    <p>Ectodermic. (A)</p> Signup and view all the answers

    Mesenchymal cells:

    <p>Are cells that can differentiate into other cell types of the connective tissue (A)</p> Signup and view all the answers

    In the equine hoof:

    <p>The primary epidermal laminae are made of loose connective tissue (A), The secondary epidermal laminae are cellular and contribute to the production of the primary epidermal laminae (B)</p> Signup and view all the answers

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

    <p>Microvilli (A)</p> Signup and view all the answers

    How do we call the immature bone?

    <p>Woven/primary bone (D)</p> Signup and view all the answers

    What do we call the cavity within a tertiary follicle?

    <p>Antrum (B)</p> Signup and view all the answers

    Which of the following is a unicellular gland?

    <p>Goblet cell (B)</p> Signup and view all the answers

    What originates from a megakaryocyte?

    <p>Platelet (B)</p> Signup and view all the answers

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

    <p>Parietal cell (D)</p> Signup and view all the answers

    Which is the outer connective tissue covering a muscle?

    <p>Epimysium (A)</p> Signup and view all the answers

    Which is correct:

    <p>Kupffer cells are found in the perisinusoidal space. (A), Hepatic sinusoids collect blood from branches of the hepatic artery and the central veins. (C), The perisinusoidal space may contain cells that store fat. (D)</p> Signup and view all the answers

    Intercalated discs in the cardiac tissue contain:

    <p>2 types of junctions (A)</p> Signup and view all the answers

    What makes up the Juxtaglomerular apparatus?

    <p>Both macula densa and Juxtaglomerular cells (B)</p> Signup and view all the answers

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

    <p>Ducts of sweat glands (D)</p> Signup and view all the answers

    Which is correct about the pancreatic islets:

    <p>The ducts of the pancreatic islets have simple cuboidal epithelium. (A), The first segment of the ducts of the pancreatic islets have low cuboidal epithelium. (B), The pancreatic islets contain many types of cells. (C)</p> Signup and view all the answers

    Which is correct about spermatocytes:

    <p>Sertoli cells have an oval nucleus (B), Spermatids are divided into dark and light types (C), Late elongated spermatogonia have tails (D)</p> Signup and view all the answers

    Rete testis - which is true?

    <p>Contain many Sertoli cells (B), Are lined by simple squamous or columnar epithelium (D)</p> Signup and view all the answers

    Prostate:

    <p>Is a tubuloacinar gland (A), Is divided into body and disseminate (B)</p> Signup and view all the answers

    The hypoblast contributes to the formation of:

    <p>Endoderm (A), Extra-embryonic membranes (B), Endoderm AND extra-embryonic membranes (D)</p> Signup and view all the answers

    The first fetal membrane that develops in birds:

    <p>Yolk sac (A)</p> Signup and view all the answers

    Flashcards

    Tight junction location

    The tight junction is the junction of epithelial cells in the intestine, closer to the top of the cells.

    Apocrine secretion

    A mode of secretion where there's a loss of cell material during the process.

    Pseudostratified columnar location

    Found in the respiratory system.

    Connective tissue proper components

    Includes lymphocytes, polysaccharides, and macrophages, but not limited to these elements.

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    Transitional epithelium description

    A stratified epithelium type that changes shape, adjusting to the stretch or volume changes in the area where it is present.

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    Plasma cell origin

    Originate from B lymphocytes.

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    Endosteum composition

    A single cell layer.

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    Dense bodies location

    Found in smooth muscle fibers.

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    Secondary lymphoid organs

    Spleen and lymph nodes.

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    Langerhans cells function

    Antigen-presenting cells found in the epidermis.

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    Gall bladder epithelium

    Simple columnar.

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    Pancreatic islets ducts

    Simple cuboidal epithelium.

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    Kidney covering

    Covered by connective tissue potentially with smooth muscle fibers.

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    Medullary rays structure

    Contain parts of collecting ducts.

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    Renal pelvis epithelium

    Transitional.

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    Ductus epididymidis epithelium

    Pseudostratified with multiple cell types.

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    Urethra epithelium

    Mostly transitional with some simple columnar and stratified.

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    Corona radiata location

    Surrounds secondary follicles.

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    Respiratory system origin

    Endoderm and mesoderm.

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    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.

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