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Exercise 6: Tissues
Remember…… Chemical Cellular Tissue Organ Organ System Organismal Level
Tissues are: groups of cells that are similar in structure and function Histology = study of tissues The four tissue types are: Epithelial Connective Muscular Nervous
Functions protection: covers surfaces sensory input absorption filtration secretion Epithelial Tissue
Characteristics avascular fit closely together has a “top” and “bottom”: apical surface (free) basement membrane regeneration Epithelial Tissue
Number of cell layers Simple Stratified Pseudostratified Shape of apical surface cells Squamous Cuboidal Columnar Transitional Epithelial Tissue: Classification
Figure 4.3 Function: Good for Diffusion Where found? Epithelial Tissue: Simple Squamous
Figure 4.5a Function: absorption and secretion Where found? Epithelial Tissue: Simple Columnar
Function: secrete mucus and move mucus with cilia Where found? Epithelial Tissue: Pseudostratified Ciliated Columnar
Function: protection from abrasion Where found? Epithelial Tissue: Stratified Squamous
Epithelial Tissue: Transitional Functions: stretches Where found?
Figure 4.4a Functions: secretion Where found? Epithelial Tissue: Simple Cuboidal
Functions protection support bind together other tissues of body Most abundant and widespread tissue in body Connective Tissue
Characteristics Rich blood flow Exceptions? Composed of Specialized cells and Extracellular Matrix (nonliving area between cells) protein fibers & ground substance Connective tissue
Four Connective Tissue Types 1 234 FibrousLiquidHard
Connective Tissue: Areolar Cells: fibroblasts Matrix: gel-like Function: wraps and cushions organs
Figure 4.11 Reticular Tissue Cells: Adipocytes (fat) Matrix: sparse Function: reserves, protection, insulation Connective Tissue: Adipose
Cells: fibroblasts Matrix: primarily collagen fibers Function: tendons and ligaments Connective Tissue: Dense Regular
Cells: chrondrocytes in lacunae (egg-shaped) Matrix: firm with collagen Function: support and reinforce (ribs, nose, trachea) Connective Tissue: Hyaline Cartilage
Elastic Cartilage More flexible/pliable Supports and protects outside the bone Where found?
Fibrocartilage More dense than other cartilages Good for support, cushioning, and shock absorption between bones Pubic Symphysis, Meniscus of knee, verterbral column
Connective Tissue: Bone Cells: osteocytes in lacunae Matrix: hard, calcified with collagen Function: support and attachment
Blood & Lymph Fluid WHY is this liquid tissue considered a connective tissue? What is its function?
Muscle Tissue 3 Types of Muscle Tissue Skeletal Smooth Cardiac Function of each?
Nerve Tissue Function?
Exercise 7: Integumentary System
Integumentary System Skin Epidermis Epithelial Tissue (Stratified squamous) Dermis Connective Tissue Hypodermis (superficial fascia) Connective Tissue
Figure 5.1 Epidermis Dermis Hypodermis (superficial fascia) Hair root Hair shaft Pore Dermal papillae (papillary layer of dermis) Meissner's corpuscle Free nerve ending Reticular layer of dermis Sebaceous (oil) gland Arrector pili muscle Sensory nerve fiber Eccrine sweat gland Pacinian corpuscle Artery Vein Adipose tissue Hair follicle receptor (root hair plexus) Hair follicle Eccrine sweat gland
Epidermis 4 Cell Types: Keratinocytes Langerhans cells Melanocytes Merkel cells Which layer is missing?
The Structure of the Epidermis Figure 5.4
Skin (Integument) Figure 5.1
Structure of the Dermis Pacinian corpuscles Meissner’s corpuscles
Accessory Organs of the Skin Hair Nails Sebaceous Glands Sudoriferous (Sweat) Glands
Anatomy of a Single Hair
Sebaceous Glands and Follicles Figure 5.11 Produce sebum (oil) Ducts empty into hair follicle
Sweat (Sudoriferous) Glands Figure 5.12a, b Apocrine: found in axillary & anogenital areas
Sweat (Sudoriferous) Glands Figure 5.12a, b Eccrine (Merocrine) –found in palms, soles of the feet, and forehead –water, salt and urea
Tissues: The Living Fabric Anatomy & Physiology. Tissues H covering H support H movement H control.
Animal Tissues & Organ Systems Tissues Remember our levels of organization/complexity! Atom Molecule Cell Tissue Organ Organ System Cytology—Study.
Tissues: The living fabric
Tissues. Types of Tissues in the Body Tissues Histology is the study of tissues Histology is the study of tissues Tissues are groups of specialized cells.
Cells and Tissues.
HISTOLOGY THE STUDY OF TISSUES. TISSUES Organization of similar cells embedded in a matrix (nonliving, intercellular material Matrix can be rigid, gel,
Histology: The Study of Tissues $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 Epithelium Connective Muscle and Nervous Grab Bag FINAL ROUND.
A Closer Look Tissues of the human body. Epithelial Tissues The lining, covering and glandular tissue of the body. Functions include: Protection. Absorption.
Classification of Tissues
Lab 1 ANIMAL TISSUES.
Tissues Whole body contains only 200 different cells types that are organized into tissues The extracellular fluid surrounding the cells organized into.
HISTOLOGY A&P 1.
Tissues A. Tissue – a grouping of cells that are similar in structure and perform a common or related function B. Histology – the study of tissues; requires.
Cells and Tissues Part 2. Stages of Mitosis Figure 3.15.
A &P 1 Practice Lab Quiz #1. Lab 2: Terminology Review using pictures/models –
The Integumentary System
Integumentary system. Organization – Skin Epidermis Dermis – Accessory Structures Hair & Hair follicles Exocrine glands Arrector pili Sensory Receptors.
The Integumentary System 1. Protection Excretion Temperature maintenance Insulation and cushion Vitamin D3 synthesis Sensory detection Integumentary system.
Histology The study of tissues.
Tissues Chapter 5.
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