Lesson 2.3 : Tissues Flashcards
Enumerate the 4 kinds of animal tissues
Epithelial tissues (epithelium)
Connective tissues
Muscle tissues
Nervous tissue
Is a type of animal tissue that forms the outer lining of organs, the covering in surfaces, and the primary glandular tissues in the body
Epithelial tissues / epithelium
Holds cells together
Basement membrane
Enumerate the types of epithelium
Simple squamous, simple columnar, simple cuboidal, pseudostratified,
stratified columnar, stratified squamous, stratified coboidal
Type of Connective Tissue:
Layers of a very hard matrix with calcium salts and collagen fibers
Bone or Osseous Tissue
Type of Connective Tissue:
-more flexible matrix than the bone
-cartilage cells called chondrocytes
-functions as protection and support
Cartilage
Type of Connective Tissue
-matrix is predominantly made up of collagen fibers and has lesser cells
-this is a fibroblast or a fiber forming cells
-functions as support
Dense Connective Tissue / Dense Fibrous Tissue
Type of Connective Tissue:
-matrix contains more cells and lesser fibers than dense connective tissues so it is softer
-functions as protection, insulation, storage, and support
Loose Connective Tissue
Type of Connective tissue:
-cellular components consist of blood cells
-with fibers that are only visible during clotting
-transports substance, immune responses, and blood
Blood
Type of Muscular Tissue:
-long, cylindrical, striated (with visible stripes) and is multinucleated
-attached to the skeleton
-involuntary muscle control
Skeletal Muscle
Type of Muscular Tissue:
-made up of non-striated, uninucleated, and spindle-shaped
-found in the walls of hollow organs (intestines, stomach, etc)
-involuntary muscle control
Smooth Muscle
Type of Muscular Tissue:
-uninucleated and has striations
-has intercalated disks
-found in the heart
-involuntary muscle control
Cardiac Muscle
Basic unit of the nervous system
Neuron
Consists of structures that can conduct electromechanical signals as a form of information.
Nervous Tissue
Nervous System:
○ located in the CNS
○ start shaped, support and control the chemical environment around the neurons
○ most abundant glial cell in the CNS
Astrocytes
Nervous System:
○ located in the CNS
○ ovoid cells
Microglial cells
Nervous System:
○ located in CNS
○ cillated cells
Ependymal Cells
2 Basic Characteristics of Nervous Tissue:
- Imitability
- Conductivity
Main Parts of a Neurons:
● a.k.a “cell body”
● protection
Soma
Main Parts of a Neurons:
transmits signals away from the cell body.
Axon
Main Parts of a Neurons:
transmits signals to the cell body.
Dendrites
Main Parts of a Neurons:
● around the axons
● allows impulses to transmit quickly
Myelin Sheath
Main Parts of a Neurons:
● “nodes of Ranvier” facilitates rapid conduction of nerve impulses.
Gaps in Myelin Sheath
Main Parts of a Neurons:
● transmission of electrochemicals occur
● allows communication and connection of neurons
Sygrapse
