Intro to Histology and Tissue Processing Flashcards
Is the study of tissues, their
functions and arrangement
to constitute an organ
Histology
Branch of Anatomy = also known as Microscopic Anatomy
Histology
- is the study of the tissues of the body and how these
tissues are arranged to constitute organs.
Histology
This subject involves all aspects of tissue biology, with the focus on how cells’ structure and arrangement optimize functions specific to each organ.
Histology
A ______ is a group of cells with interrelated function, not just a group of cells.
tissue
● _____ in the tissue do not need to be the same type, or
same morphology.
Cells
Since _____ are made up of cells, you can never understand the characteristics of a _____ without understanding the characteristics of its individual cells.
tissues
The human body is organized at different levels, starting with the cell. ____ are organized into tissues, and _____ form organs. _____ are organized into organ systems such as the skeletal and muscular systems
Cells
tissues
Organs
If you combine these four basic types of tissue, you can form an organ.
Muscle tissue
Epithelial tissue
Nervous tissue
Connective tissue
cells that supports neurons or nerve cells
glial cells
the cell of epithelial tissue
epithelial cell
the cell of connective tissue
fibroblasts
cell of muscle tissue
muscle cell - myocytes
cells of nervous tissue
neurons and glial cells
(tissue) to provide protection, and functions for absorption and secretion.
Epithelial tissue
Epithelial tissue protects the stomach from what?
HCl (pH-1)
are a type of intestinal mucosal epithelial cell, the primary function of ______ is to synthesize and secrete mucus. These mucins help neutralize the acids produced by the stomach.
Goblet cells
T or F|Epithelial tissues are vascular.
FALSE - they are AVASCULAR (no blood vessels bcs they are tightly packed thus there is no space for blood vessels. )
THE PRINCIPAL FUNCTIONS OF EPITHELIAL TISSUES
INCLUDE THE FOLLOWING:
a. Covering, lining, and protecting surfaces (eg.
epidermis).
b. Absorption (eg. the intestinal lining).
c. Secretion (eg. parenchymal cells of glands).
If the epithelial tissue in the stomach is avascular, how can it get its oxygen and blood supply?
connective tissue - shares blood
supply and oxygen to the tightly packed epithelial tissue.
provides a matrix that supports and
physically connects other tissues and cells together to form the organs of the
body
Connective tissue
The interstitial fluid of _________ gives metabolic support to cells as the medium for diffusion nutrients and waste products.
connective tissue
Epithelial Tissue and connective tissue are lovers.
________ is there to protect the connective tissue, while the ________ will always be there to keep the epithelial tissue alive.
Epithelial Tissue
connective tissue
are responsible for connecting the epithelial tissue to the muscle tissue
Connective tissues
provide movement of tissue, since it is
composed of elongated cells specialized for contraction.
Muscles
contains bundles of very
long, multinucleated cells with
cross-striations.
Their contraction is quick, forceful, and usually under voluntary control.
Skeletal muscle
also has cross-striations and is composed of elongated, often branched
cells bound to one another at structures called intercalated discs that are unique to it.
Contraction is involuntary, vigorous, and rhythmic.
Cardiac muscle
consists of collections of fusiform cells that lack striations and have slow, involuntary contractions.
Smooth muscle
In all types of muscle, ______ is caused by the sliding interaction of thick myosin filaments along thin actin filaments.
The forces necessary for sliding are generated by other proteins affecting the weak interactions in the
bridges between actin and myosin.
contraction
provides sensation, control and
information processing
Nervous tissue
Composed of cells with long, fine processes specialized to receive,
generate, and transmit nerve impulses.
Nervous tissue
develops in the early embryo when the
dorsal ectoderm neural plate folds lengthwise to form the neural tube, the precursor of the CNS, and releases neural crest cells, precursors for much of the PNS.
Nervous tissue
made up of the brain and spinal cord
CNS - Central Nervous System
the part of your nervous system that lies outside your brain and spinal cord.
PNS - Peripheral Nervous System
● Tissues are not always tightly packed with cells but rather are also composed of ____ and ________
fibers and ground substances
Fibers and ground substances are
referred to as extracellular matrix.
● Group of cells specialized
to carry on interrelated
functions and their
associated extracellular
matrix.
TISSUES
Tissues have two interacting components:
cells + extracellular matrix
The extracellular matrix is
composed of many kinds of:
a. Ground substance
b. Fibers
