Tissues Chapter 4 Flashcards
tissues
various grouping of cells
tissues differ..
from each other in the size and shape of their cells
what are the four major different types of tissues
Epithelial tissue,Connective tissue,Muscle tissue,Nervous tissue
Epithelial tissue
Forms sheets that cover or line the body
connective tissue
Provides structural and functional support
Muscle tissue
Contracts to produce movement
Nervous tissue
Senses, conducts, and processes information
Homeostasis
The relative constancy of the internal fluid environment.
what is matrix
is like jelly, made up of mostly water with various interlocking fibers.
matrix is also called
the extracellular matrix (ECM)
Squamous:
Flat and scalelike
Cuboidal:
cubed-shaped
Columnar:
Higher than they are wide
Transitional:
Varying shapes that can stretch
how do you classify Epithelial Tissue as a shape
Squamous, Cuboidal ,Columnar, Transitional
how do you classify Epithelial Tissue as cell arragement
simple and Stratified
Simple epithelial tissue
is a single layer of cells with the same shape.
Stratified epithelial tissue
are many layers of cells.
Simple squamous epithelium consists of
a single layer of very thin and irregularly shaped cells.
Simple cuboidal epithelium is a
single layers of cells that are, on average, about as high as they are wide.
Stratified squamous epithelium consists of
several layers of closely packed cells.
stratified squamous epithelial tissue protects
the body against invasion by microorganisms.
Pseudostratified epithelium is
made up of cells that reach the basement membrane and appear to be stratified because their nuclei are at different levels.
Transitional Epithelium
lines the organs of the urinary system and is known here as urothelium.
Connective tissue is found in
skin, membranes, muscles, bones, nerves, and all internal organs.
Loose fibrous connective tissue
is not particularly tough, but surrounds blood vessels and provides support to internal organs
Fibrous connective tissue,
composed of parallel bundles of collagen fibers,
Adipose
white fat stores lipids
(triglycerides
a type of fat (lipid) found in your blood.
Reticular tissue
delicate net of collagen fibers, as in bone marrow
Dense fibrous tissue
bundles of strong collagen fibers, densely packed as in tendon
Compact bone
The solid form of bone that makes up the outer walls of bones in the skeleton
Cancellous bone
made up of thin, crisscrossing beams of bone
Hyaline cartilage
moderate amount of collagen in matrix; forms a flexible gel.
Fibrocartilage
matrix is very dense with collagen; forms very tough, hard gel.
Elastic cartilage
matrix has some collagen with elastin; forms a soft, elastic gel.
Blood tissue
matrix is fluid plasma;
Hematopoietic tissue
blood-forming tissue with a liquid matrix. This type of tissue is responsible for the formation of blood cells and lymphatic system cells important in our defense against disease
Muscle tissue types
Muscle cells are the movement specialists of the body. They have a higher degree of contractility (ability to shorten or contract)
what are three kinds of muscle tissue
skeletal muscle tissue ,cardiac muscle tissue, and smooth muscle tissue
Skeletal muscle tissue:
Attaches to bones; also called striated or voluntary;
Cardiac muscle tissue
Also called striated involuntary; composes heart wall, and the regular but involuntary contractions of cardiac muscle produce the heartbeat
Smooth muscle tissue
Also called nonstriated (visceral) or involuntary; no cross striations; found in blood vessels and other tube-shaped organs
Nervous tissue consists of two types of cells what are they
Nerve cells (neurons),Glia or neuroglia
Nerve cells (neurons)
are the conducting units of the system
Glia or neuroglia
these are special connecting and supporting cells
All neurons are characterized by cell body and two types of processes:
One axon,One or more dendrites
One or more dendrites
The dendrites carry impulses toward the cell body.Copyright © 2016 by Elsevier Inc. All rights reserve
One axon
axon transmits a nerve impulse away from the cell body.
