Transcript of A Closer Look Tissues of the human body. Epithelial Tissues The lining, covering and glandular...
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- A Closer Look Tissues of the human body
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- Epithelial Tissues The lining, covering and glandular tissue of
the body. Functions include: Protection. Absorption. Filtration.
Secretion.
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- Simple Squamous Epithelium A single layer of thin squamous
cells resting on a basement membrane. Air sacs of lungs and in
walls of capillaries
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- Simple Cuboidal epithelium One layer of cubodial cells resting
on a basement membrane. Glands and their ducts, salivary glands and
pancreas, kidney tubules and ovaries
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- Simple Columnar Epithelium Single layer of tall cells that fit
closely together Lines the entire length of the digestive
tract.
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- Ciliated Pseudostratified Columnar Epithelium All cells rest on
a basement membrane. Ciliated line the respiratory tract for
absorption and secretion.
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- Stratified Squamous Epitheium Most common in the body. The
cells at the free edge are squamous cells whereas those close to
the basement are cuboidal or columnar. Found in esophagus, mouth
and outer portion of the skin.
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- Stratified Cuboidal Epithelial Cells Two cells layers with the
surface cells being cuboidal in shape. Rare, ducts of large
glands.
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- Stratified columnar epithelium Columnar cells but the basal
cells vary in size and sharp. Very rare. Salivary gland ducts.
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- Transitional Epithelium Cells of the basal layer are cuboidal
or columnar, those at the free surface vary in appearance. Line the
organs of the urinary system because of the ability to
stretch.
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- Connective Tissue Connects the body parts. Functions Include:
Protecting. Supporting. Binding together.
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- Bone (osseous) tissue. Bone cells sitting in lacunae and
surrounded by layers of a hard matrix. Exceptional ability to
protect and support other body organs. (skull)
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- Hyaline Cartilage Less hard and more flexible than bone. Most
abundant. Larynx, ribs to the breastbone and covers the ends of
bones.
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- Elastic Cartilage Found where elasticity is desired. Supports
the external ear.
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- Fibrocartilage Cushion like disks between the vertebrae of the
spinal column
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- Dense connective tissue Tendons- muscles to bones. Ligaments-
bones to bones.
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- Loose connective tissue (Areolar) Cushions and protects the
body organs.
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- Loose connective tissue (adipose) Fat. It is an areolar tissue
in which fat cells predominate. Forms the subcutaneous tissue
beneath the skin where it insulates the body and protects from hot
and cold.
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- Reticular connective tissue Supports many blood cells in lymph
nodes, spleen and bone marrow.
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- Blood Transport vehicle for the cardiovascular system.
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- Muscle Tissue Specialized to contract or shorten. Function
Produce Movement.
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- Skeletal muscle tissue Control the voluntary movement of the
body. Gross body movements.
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- Cardiac muscle Found only in the heart. Involuntary
control.
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- Smooth Muscle Tissue No striations are visible. Found in the
walls of hollow organs such as stomach, bladder, uterus and blood
vessels.
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- Nervous Tissue Neurons. Receive and conduct electrochemical
impulses from one part of the body to another. Functions include:
Irritability Conductivity.
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- Neuron Long processes allow single neuron to conduct an impulse
over long distances in the body. Make up brain, spinal cord and
nerves.