Classify tissue draw labelled diagrams of different types of tissue found in the human body?
Classify tissue draw labelled diagrams of different types of tissue found in the human body?
Tissues are collections of similar cells performing specific functions in the body. Histology is the study of tissues.
Four Main Types of Tissue:
- Epithelial Tissue: Covers body surfaces, lines body cavities and forms glands.
- Connective Tissue: Supports, connects, and separates different types of tissues and organs in the body.
- Muscle Tissue: Responsible for movement.
- Nervous Tissue: Conducts electrical signals for communication.
1. Epithelial Tissue
Epithelial tissue covers body surfaces, lines body cavities and organs, and forms glands. Functions include protection, absorption, filtration, excretion, secretion, and sensory reception.
Types of Epithelial Tissue:
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Squamous: Flat, scale-like cells.
- Simple Squamous: Single layer; allows for diffusion and filtration.
- Stratified Squamous: Multiple layers; provides protection in areas of wear and tear.
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Cuboidal: Cube-shaped cells.
- Simple Cuboidal: Single layer; involved in secretion and absorption.
- Stratified Cuboidal: Multiple layers; protective function.
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Columnar: Column-shaped cells.
- Simple Columnar: Single layer; involved in secretion and absorption; may have cilia.
- Stratified Columnar: Multiple layers; protective and secretory functions.
- Pseudostratified Columnar: Single layer of cells of differing heights; involved in secretion and absorption; may have cilia.
- Transitional: Capable of changing shape; found in the urinary system. Source
Diagrams:
Image from: Wikimedia Commons
2. Connective Tissue
Connective tissue supports, connects, and separates different types of tissues and organs in the body.
Types of Connective Tissue:
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Connective Tissue Proper:
- Loose Connective Tissue: Includes areolar, adipose, and reticular tissues.
- Dense Connective Tissue: Includes dense regular, dense irregular, and elastic tissues.
-
Cartilage:
- Hyaline Cartilage: Provides support and flexibility.
- Elastic Cartilage: More flexible than hyaline cartilage.
- Fibrocartilage: Provides tough support and resists compression.
-
Bone Tissue:
- Compact Bone: Hard, dense outer layer of bone.
- Spongy Bone: Inner, porous layer of bone.
- Blood: Fluid connective tissue that transports nutrients, wastes, and gases. Source
Diagrams:
Image from: Wikimedia Commons
3. Muscle Tissue
Muscle tissue is responsible for movement and is composed of specialized cells called muscle fibers.
Types of Muscle Tissue:
- Skeletal Muscle: Attached to bones; responsible for voluntary movement.
- Smooth Muscle: Found in the walls of internal organs; responsible for involuntary movement.
- Cardiac Muscle: Found in the heart; responsible for pumping blood; involuntary. Source
Diagrams:
Image from: Wikimedia Commons
4. Nervous Tissue
Nervous tissue conducts electrical signals for communication between different parts of the body.
Types of Nervous Tissue:
- Neurons: Conduct electrical signals.
- Neuroglia (glial cells): Support and protect neurons. Source
Diagrams:
Image from: Wikimedia Commons