Flashcards in Histology Pt 1 Deck (29):
The study of tissues
The study of cells
A group of associated cells and their intercellular substance working together to perform a specific function or functions.
What are the four tissue categories?
4. Connective Tissue
What tissue has small cells closely packed together, can be apical or luminal surfaced, is avascular, and has a basement membrane?
What are the four types of epilethium tissue?
1. Simple squamous epilethium
2. Simple cuboidal epilethium
3. Simple columnar epilethium
4. Stratified squamous epilethium
Single layer of cells
More than 1 layer of cells
Very thin, scale-like
Longer than wide
What tissue's function is absorption, and is located in the alveoli or lungs, kidney, glomerulus, and the walls of capillaries?
Simple squamous epilethium
What tissue has a function of lining cavities, ducts, and tubules, and is located in the ducts, tubules, and kidney tubules?
Simple cuboidal epilethium
What tissue produces mucus, has a special feature of a Goblet cell, and is located in the respiratory tract?
Simple columnar epilethium
What tissue's function is protection, has special features of stratum corners, stratum basale, and keratin, and is located in the skin and vagina?
Stratified squamous epilethium
Describe a cell that would tell you where you would find a simple squamous epilethium tissue, and list the cell's components.
Cheek cell; flat; cell membrane, nucleus, cytoplasm
Describe a cell that would tell you where you would find a simple cuboidal epilethium tissue.
Thyroid; cell nuclei often oval shaped
List a columnar epilethium tissue's cell's components and describe the cell nuclei shape.
Cell nuclei are often oval and arranged in rows; Goblet cells
List the stratified epilethium tissues.
1. Melanocytes - produce melanin
2. Merkel's Discs - sensory structures
3. Keratinocytes - make up most of the cells of the skin
4. Langerhan's cells - immune cells of the skin
Layers of epilethium in between
What are the characteristics of muscle tissue?
Elongate, tube-shaped cells (fibers), specialized for contraction, excitable: can propagate and electrical charge, and when contract produce movement
What are the examples of muscle tissue?
Skeletal, cardiac, and smooth
What muscle tissue is peripherally multinucleate, has distinct striations, and provides voluntary movement?
(Hint: it is located in the arms and legs.)
What muscle has intercalated discs, is short-branched, has 1-2 nuclei, and has striations (less distinct)?
(Hint: it is located in the heart.)
What muscle is large, has a central, football-shaped nucleus, and has no striations?
(Hint: it is located in the stomach, intestines, and uterus.)
What are the characteristics of nervous tissue?
Highly specialized tissue, responsible for generating impulses, extremely long processes, and has two main cell categories
What are the two main cell categories of nervous tissue? Describe them.
1. Neurons: functional cells of the nervous system
ii. Processes = extensions (axons and dendrites)
2. Neurologia: protects and supports neurons
What is the function of nervous tissue?
Produces impulses and electrical signals for communication in the body
Where is the nervous tissue located?
Brain and spinal cord, also peripheral nerves