ANIMAL TISSUES Flashcards
Specialized group of cells?
Tissue
study of tissue
Histology
4 types of tissue
EPITHELIAL
CONNECTIVE
MUSCLE
NERVOUS
CHARACTERISTICS: Limited intercellular space
EPITHELIAL
which means that cell are tightly packed together
CHARACTERISTICS: Single of multiple layers of cel
EPITHELIAL
consists of single or multiple layers of cell
CHARACTERISTICS: Has apical and basal surfaces
EPITHELIAL
CHARACTERISTICS:avascular
EPITHELIAL
Lack blood vessel
CHARACTERISTICS: Mitotic Capability
EPITHELIAL
divide and form new cells
FUNCTIONS OF EPITHELIAL TISSUE
FUNCTIONS: Protection
Sensory Secretions and Absorption
CLASSIFICATION OF EPITHELIAL TISSUE: Number of cell layers
- SIMPLE- Single
2. STRATIFIED- Multiple
CLASSIFICATION OF EPITHELIAL TISSUE: CELL SHAPES
SQUAMOUS
CUBOIDAL
COLUMNAR
SQUAMOUS
thin flat
CUBOIDAL
cube-shaped
COLUMNAR
more tall than wide
CLASSIFICATION OF EPITHELIUM: Simple
- SQUAMOUS
- CUBOIDAL
- COLUMNAR
- NONCILIATED
- CILIATED
CLASSIFICATION OF EPITHELIUM: Stratified
- SQUAMOUS
- NONKERATINIZED
- KERATINIZED - CUBOIDAL
- COLUMNAR
CLASSIFICATION OF EPITHELIUM: Pseudostratified
- COLUMNAR
- NONCILIATED
- CILIATED
CLASSIFICATION OF EPITHELIUM: Transitional
roughly cuboidal to columnar when not stretched and squamous- like when stretched
DESCRIPTION: Single layer of flattened cells with disc-shaped central nuclei and sparse cytoplasm: the simplest of the epithelia.
SIMPLE SQUAMOUS EPITHELIUM
FUNCTION: Allows passage of materials by diffusion and filtration in sites where protection is not important: secretes lubricating substances in serosae
SIMPLE SQUAMOUS EPITHELIUM
LOCATION: Kidney glomeruli; air sacs of lungs; lining or heart; blood vessels and lymphatic vessel; lining of the ventral body cavity (serosae)
SIMPLE SQUAMOUS EPITHELIUM
DESCRIPTION: Single layer of cubelike cells with large, spherical central nuclei
SIMPLE CUBOIDAL EPITHELIUM
FUNCTION: secretion and absorption
SIMPLE CUBOIDAL EPITHELIUM
LOCATION: Kidney tubules and secretory portions of small glands and ovary surface.
SIMPLE CUBOIDAL EPITHELIUM
DESCRIPTION: Single layer of tall cells with round to oval nuclei; some cells bear cilia; layer may contain mucus-secreting unicellular glands (Goblet cells)
SIMPLE COLUMNAR EPITHELIUM
FUNCTION: ABSORPTION: secretion of mucus, enzymes and other substances: ciliated type propels mucus (or reproductive cells) by ciliary action.
SIMPLE COLUMNAR EPITHELIUM
LOCATION; Nonciliated type lines most of the digestive tract (Stomach and anala canal), gallbladder, and excretory ducts of some glands; ciliated variety lines small bronchi, uterine tubes, and some regions of the uterus
SIMPLE COLUMNAR EPITHELIUM
What are Goblet cells?
secrete mucin
WHAT IS THE CILIA/
For sensory and movement
Microvilli/ brush border
finger-like projections; for
absorption of nutrients
DESCRIPTION: single layer of cells of differing heights, some not reaching the free surface, nuclei seen at different levels, may contain mucus-secreting cells and bear cilia
PSEUDOSTRATIFIED COLUMNAR EPITHELIUM
FUNCTIONS: Secretion, particularly of mucus, propulsion of mucus by ciliary action
PSEUDOSTRATIFIED COLUMNAR EPITHELIUM
LOCATION: Nonciliated type in male’s sperm carrying ducts and ducts of large glands; ciliated variety lines the trachea, most upper respiratory part
PSEUDOSTRATIFIED COLUMNAR EPITHELIUM
DESCRIPTION: a thick membrane composed of several cell layers: basal cells
STRATIFIED SQUAMOUS EPITHELIUM
LOCATION: non keratinized type forms the moist things of the esophagus, mouth, and vagina, urethra and anus
STRATIFIED SQUAMOUS EPITHELIUM
LOCATION: Keratinized variety of forms the epidermis of the skin, a dry membrane
STRATIFIED SQUAMOUS EPITHELIUM
DESCRIPTIONS: generally two layers of cubelike cells
STRATIFIED CUBOIDAL EPITHELIUM
FUNCTION: PROTECTION
STRATIFIED CUBOIDAL EPITHELIUM
LOCATION: largest ducts of sweat glands, mammary glands, and salivary glands
STRATIFIED CUBOIDAL EPITHELIUM
DESCRIPTIONS: several cell layers; basal cells usually cuboidal; superficial cells elongated and columnar
STRATIFIED
COLUMNAR EPITHELIUM
FUNCTION: Protection; secretion
STRATIFIED
COLUMNAR EPITHELIUM
LOCATION: Rare inthe body; small amounts in male urethra and in large ducts of some glands
STRATIFIED
COLUMNAR EPITHELIUM
DESCRIPTIONS: resemble both stratified squamous and stratified cuboidal; basal cells cuboidal or columnar; surface cells dome shaped or squamous- like, depending on degree or organ stretch
TRANSITIONAL
EPITHELIUM
LOCATION: Lines the ureters, bladder and part of the urethra
TRANSITIONAL
EPITHELIUM
FUNCTIONS: Stretched readily and permits distension of the urinary organ by contained urine.
TRANSITIONAL
EPITHELIUM
most widespread and diverse tissue
CONNECTIVE TISSUE
the components of these tissue includes:
Cells
Protein fibers
Ground substance
CONNECTIVE TISSUE
either solid, semi-solid and viscous
CONNECTIVE TISSUE
Connective Tissue- cell types
- fibroblasts
- macrophages
- Leukocytes (lymphocyte)
- plasma cells
- mast cells
- adipocytes
- mesenchymal cells
form the protein fibers
fibroblasts
fat cells
adipocytes
parts of the connective tissue
- BLOOD VESSEL
- GROUND SUBSTANCE
- PROTEIN FIBERS
- Elastic Fibers
- Collagen Fibers
- reticular Fibers
- resident Cells
- mesenchymal cells
- adipocytes
- fibroblasts
functions of the Connective Tissue
-Protection
-Structural support
-Connection and binding
-Storage
Transportation
-Immunity
Connection and binding: Tendons
bind muscles to bone
Connection and binding:Ligaments
bind bone to bone
What do the Connective tissue store?
Calcium and Phosphorous
Classification of Connective Tissues
- Connective tissue proper or Fibrous CT
- Supporting CT
- Fluid CT
Classification of Connective Tissues: Connective tissue proper or Fibrous CT
- 1 Loose Connective Tissue
a. areolar CT
b. adipose CT
c. reticular CT - 2 Dense Connective Tissue
a. regular DCT
b. irregular DCT
c. elastic CT
Classification of Connective Tissues: . Supporting CT
- 1 Cartilage
a. Hyaline
b. Fibrocartilage
c. Elastic - 2 Bone
a. Compact
b. Spongy
Classification of Connective Tissues: Fluid CT
- 1 Blood
3. 2 Lymph
Description: fibers (Collagen, elastic, and reticular) and several kinds of cells (Fibroblast, microphages, adipocytes, and mast cells) embedded in a semi fluid ground substance
areolar CT
what are the fibers inside the areolar CT
Collagen, elastic, and reticular
What are the cells inside the Areolar CT?
Fibroblast, microphages, adipocytes, and mast cells
LOCATION: Subcutaneous layer deep to skin; superficial part of dermis skin; mucus membrane; blood vessel; nerves, and body organs
areolar CT
FUNCTION: Strength support and elasticity
areolar CT
DESCRIPTIONS: Adipocytes, cells that are specialized to store triglycerides (Fats) in a large central area in their cytoplasm; nuclei and cytoplasm are peripherally located
Adipose CTissue
LOCATION; Subcutaneous layer deep to skin, around heart and kidneys, yellow bone marrow of long bones, and padding around joints and behind eyeball in eye socket
Adipose CTissue
FUNCTIONS; reduces heat loss through skin, serves as an energy reserve, supports, and protects
Adipose CT
Parts of the Adipose Tissue
Nucleus cytoplasm Fat Storage area of Adipocyte Blood Vessel Plasma Membrane
DESCRIPTION: A network of interlacing reticular fibers and reticular cells
RETICULAR CT
LOCATION: Stroma (supporting framework) liver, spleen, lymph nodes; portion of the red bone marrow that gives rise to blood vessel, basement membrane; and around blood vessel and muscle
RETICULAR CT
FUNCTION: Forms stroma organs; binds together smooth muscle tissue cells; filters and removes worn out blood cells in the spleen and microbes in lymph nodes
RETICULAR CT
DESCRIPTION: Matrix looks shiny whites, consists predominantly of collagen fibers arranged in bundles: fibroblasts present in rows between bundles
dense regular connective Tissue
LOCATION: Forms tendons (attach muscle to bone), most ligaments (attach bone to bone), and aponeuroses (sheet- like tendons that attach muscle to muscle or muscle to bone)
dense regular connective Tissue
FUNCTION: provide strong attachment between various structures
dense regular connective Tissue
DESCRIPTIONS: randomly arranged collagen fibers along with a few fibroblasts.
DENSE IRREGULAR CT
LOCATION: fasciae (tissue beneath skin and around muscle and other organs), deeper part of the dermis skin. periosteum( membrane) of bone, perichondrium of cartilage, joint capsules, membrane capsules around various organs (Kidneys, livers, testes, lymph nodes) pericardium of the heart, and heart valves
DENSE IRREGULAR CT
FUNCTION: Provides strength
DENSE IRREGULAR CT
DESCRIPTION: Freely branching elastic fibers with fibroblasts distributed in between.
ELASTIC CONNECTIVE TISSUE
LOCATION: lung tissue, walls of elastic arteries, tracheae (wind pipes0, bronchial tubes, true vocal cords, suspensory ligament of penis, and ligaments between vertebrae
ELASTIC CONNECTIVE TISSUE
FUNCTION: Allows stretching of various organs
ELASTIC CONNECTIVE TISSUE
STRUCTURE: collagen fibers are small and evenly dispersed in the matrix, making the matrix appear transparent, the chondrocytes are found in spaces, or lacunae, within the form but flexible matrix
SUPPORTING CONNECTIVE TISSUE: CARTILAGE
HYALINE CARTILAGE
FUNCTION: Allows growth of long bones, provides rigidity with some flexibility in the trachea, bronchi, ribs, and nose, forms strong, smooth, yet somewhat flexible articulating surfaces, forms the embryonic skeleton
SUPPORTING CONNECTIVE TISSUE: CARTILAGE
HYALINE CARTILAGE
STRUCTURE: Collagen fibers are more numerous than cartilage and are arranged in thick bundles.
SUPPORTING CONNECTIVE TISSUE: CARTILAGE
FIBROCARTILAGE
FUNCTION: somewhat flexible and capable of withstanding considerable pressure, connects structures subjected to great pressure
SUPPORTING CONNECTIVE TISSUE: CARTILAGE
FIBROCARTILAGE
STRUCTURE: Similar to hyaline cartilage, but matrix also contains elastin fibers
SUPPORTING CONNECTIVE TISSUE: CARTILAGE
ELASTIC CARTILAGE
FUNCTION: provides rigidity with even more flexibility than hyaline cartilage because elastic fibers return to their original shape after being stretched
SUPPORTING CONNECTIVE TISSUE: CARTILAGE
ELASTIC CARTILAGE
LOCATION: growing bones, cartilage rings of the respiratory system, costal cartilage of ribs, nasal cartilages, articulating surface of bones and the embryonic skeleton
SUPPORTING CONNECTIVE TISSUE: CARTILAGE
HYALINE CARTILAGE
LOCATION: Intervertebral disks, pubic symphysis and articular discs (e.g knees and temporomandibular (Jaw joints)
SUPPORTING CONNECTIVE TISSUE: CARTILAGE
FIBROCARTILAGE
LOCATION: External ears, epiglottis, and auditory tubes
SUPPORTING CONNECTIVE TISSUE: CARTILAGE
ELASTIC CARTILAGE
DESCRIPTION: hard, calcified matrix containing many collagen fibers osteocytes lie in lacunae. Very well vascularized
BONE
FUNCTION: supports and protects (By enclosing) ; Provides levers for the muscles to act on; stores calcium and other minerals and fat; marrow inside bones is the site for blood cell formation (hematopoiesis)
BONE
percentage of blood
8%
other fluids and tissues
92%
plasma percentage in blood
55%
formed elements
45%
plasma proteins percentage
7%
PROTEINS IN THE BLOOD
ALBUMINS -57%
GLOBULINS- 38%
FIBRINOGEN- 4%
PROTHROMBIN- 1%
PLASMA; WATER
91%
PLASMA; OTHER SOLUTES
2%
FORMED ELEMENTS
PLATELETS
LEUKOCYTES
ERYTHROCYTES
PLATELETS
140,00- 340,000
LEUKOCYTES
5000-9000
- NEUTROPHILS
- LYMPHOCYTES
- MONOCYTES
- EOSINOPHILS
- BASOPHILS
NEUTROPHILS
60-70%
LYMPHOCYTES
20-25%
MONOCYTES
3-8%
EOSINOPHILS
2-4%
BASOPHILS
0.5-1%
OTHER SOLUTES
IONS NUTRIENTS WASTE PRODUCTS GASSES REGULATORY SUBSTANCES
DESCRIPTIONS: long cylindrical, multinucleate cells; obvious striations
SKELETAL MUSCLE
FUNCTION: Voluntary movement; locomotion; manipulation of the environment; facial expression; voluntary control
SKELETAL MUSCLE
LOCATION; ATTACHED TO BONES OR OCCASIONALLY TO SKIN
SKELETAL MUSCLE
DESCRIPTION: Branching, striated, generally, uninucleate cells that interdigitate at specialized junctions (intercalated discs)
CARDIAC MUSCLE
FUNCTION: As it contracts, it propels blood into the circulation; involuntary control
CARDIAC MUSCLE
LOCATION: the walls of the heart
CARDIAC MUSCLE
DESCRIPTION: Spindle-shaped (elongated) cells with central nuclei; no striations; cells arranged closely to form sheets
SMOOTH MUSCLE
FUNCTION: Propels substances or objects( Foodstuffs, urine, a baby) along internal passageways; involuntary control
SMOOTH MUSCLE
LOCATION: Mostly in the walls of hollow organs
SMOOTH MUSCLE
SKELETAL MUSCLE
Location: Attached to skeleton
Cross- Striations: Present
Shape of the fibers: CYLINDRICAL
NUMBER OF NUCLEI: MAny or multinucleate
POSITION OF THE NUCLEI: Peripheral
TYPE OF CONTROL: Voluntary
SPEED OF CONTRACTION: Most Rapid
SMOOTH MUSCLE
Location: walls of internal organs
Cross- Striations: Absent
Shape of the fibers: Spindle shaped
NUMBER OF NUCLEI: one or uninucleate
POSITION OF THE NUCLEI: Center
TYPE OF CONTROL: InVoluntary
SPEED OF CONTRACTION: slowest
CARDIAC
Location: walls of heart
Cross- Striations: present
Shape of the fibers: Branched
NUMBER OF NUCLEI: one or uninucleate
POSITION OF THE NUCLEI: Center
TYPE OF CONTROL: InVoluntary
SPEED OF CONTRACTION: Intermediate
consists of neurons which are the cells that conduct signals, neuroglial cells (Help nourish, insulate, and replenish neurons) suchs as microglial cells, astrocytes, and oligodendrocytes
NERVOUS TISSUE
neuroglial cells
help nourish , insulate , and replenish neurons
STRUCTURE OF A TYPICAL NEURONS
DENDRITE NUCLEUS AXON TERMINAL AXON SCHWANN CELL MYELIN SHEATH NODE OF RANVIER
DESCRIPTION; neurons are branching cells; cell processes that may be quite long extend form nucleus- containing cell body; also contributing to nervous tissue are non irritable supporting cells
NERVOUS TISSUE
FUNCTION; Transmit electrical signals from sensory receptors and to effectors (Muscle and glands) which control theri activity
NERVOUS TISSUE
LOCATION: Brain, Spinal cord, and nerves
NERVOUS TISSUE