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Introduction to Human Body Systems

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Introduction to Human Body Systems The Tissues Levels of Organization Molecules (like DNA and proteins) Organelles Cells Tissues Organs Organ Systems Organism ... – PowerPoint PPT presentation

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Title: Introduction to Human Body Systems


1
Introduction to Human Body Systems
  • The Tissues

2
Levels of Organization
  • Molecules (like DNA and proteins)
  • Organelles
  • Cells
  • Tissues
  • Organs
  • Organ Systems
  • Organism
  • Populations
  • Communities

3
Levels of Organization
  • A bunch of cells make up tissues (like muscular
    tissue)
  • Tissues come together to form organs (like a
    heart)
  • Organs work together in organ systems (like the
    circulatory system)
  • Organ systems work together to make organisms
    (like humans)

4
Guess the Organ Systems
  • What are some organ systems that you can think of?

5
Tissues
  • All of the organ systems are made up of just four
    TYPES of tissues
  • Epithelial tissue
  • Connective tissue
  • Muscle tissue
  • Nervous tissue
  • Each tissue type contains many different tissues

6
Epithelial Tissue
  • Function cover, protect, secrete and absorb
    makes up various surfaces.
  • Cuboidal Single layer of cube like cells.
  • Columnar Single layer of tall slender cells
    may have microvilli at free surface.

7
Connective Tissue
  • Properties living cells are separated by a
    nonliving matrix, which is usually secreted by
    the cells themselves. The MATRIX gives the
    tissue its properties.
  • White fibrous tissue collagen fibrils secreted
    by fibroblasts. Makes up the tendons and
    ligaments.
  • Bone Extremely hard with calcium salts in
    matrix. Cells are called osteocytes arranged is
    Haversian system.
  • Adipose Fat storage. Large storage structure
    with nucleus moved to side.
  • Blood Matrix is liquid (plasma) and is NOT
    formed by the blood cells themselves. Various
    cells erythrocytes, various types of
    leucocytes, and platelets or thrombocytes.

8
White Fibrous Tissue
Blood (Plasma is on top)
Bone Bone Tissue
Adipose Tissue
9
Muscle Tissue
  • Function specialized for contraction. Have
    elongated shape containing proteins that undergo
    changes in shape to cause shortening.
  • Smooth muscle controlled by autonomic nervous
    system, involuntary control.
  • Skeletal muscle striated muscle moved under
    voluntary control. Cells are multinucleated.
  • Cardiac muscle Found only in the heart.
    Striated, branched, with one nucleus. Under
    autonomic nervous control.

10
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11
Nervous Tissue
  • Function Receives stimulus from internal and
    external environment which is converted into
    action potentials which evoke appropriate
    responses.

Picture
12
Organs
  • Multiple tissue or tissue layers form organs
  • What type of tissue do you think make up the
    following organs/structures-
  • Intestines
  • Heart
  • Skin
  • Bones

13
Organ Systems
  • Organs that work together make up organ systems
  • Do you think all organs belong to only one organ
    system?
  • Do you think that all organ systems operate
    independently of one another?

14
Guess that Organ System
  • What organ system do you think the following
    organs belong to?
  • Heart
  • Skin
  • Liver
  • Lung
  • Kidney
  • Intestine
  • Blood cells

15
What is/are the function(s) of the various organ
systemshow do they fit together?
  • Integunmunintary
  • Skeletal System
  • Muscular System
  • Circulatory System
  • Respiratory System
  • Digestive System
  • Excretory System
  • Immune System
  • Nervous System
  • Endocrine System
  • Reproductive System

16
A few relationships
  • Circulatory and respiratory systems the blood
    carries oxygen to the cells
  • Circulatory and digestive systems the blood
    carries nutrients to the cells
  • Endocrine and reproductive systems hormones in
    the endocrine system help the reproductive system
    function
  • Integunmunintary and immune system our skin is
    our first line of defense against germs
  • Nervous and all systems the brain and nervous
    system help control them all!
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