Organization of the Human Body Body Systems Body Cavities

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Organization of the Human BodyBody SystemsBody
Cavities
Introduction to Human Anatomy
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Anatomy the structure of what makes up the
body Physiology the function of the things in
the body
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Levels of Organization

1. Cells
2. Tissues
3. Organs
4. Organ systems
5. Organism

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A. Cells

• How many different types of cells are in your
  body?
• Examples

250!
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B. Tissues

• Examples
• Epithelial
• Connective
• Nervous
• Muscle

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1. Epithelial - sheets of closely packed cells
that cover the surface of your body and your
organs
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2. Connective tissue - holds together and
supports other tissues
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Examples

• Blood
• Fat (adipose)
• Bone
• Cartilage

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3. Nervous tissue - for communication and response

• Neuron the structural and functional units of
  our nervous system

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Examples

• Longest nerve in the human body - Sciatic nerve
  in legs

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4. Muscle tissue for movement

1. Skeletal - those attached to the skeleton
   (voluntary)
2. Cardiac - our heart muscle (involuntary)
3. Smooth - make up our internal organs
   (involuntary)

cardiac
smooth
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C. Organs

• Examples

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D. Organ Systems 11 of them!
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Skeletal System

• Largest bone femur
• Smallest bone stapes
• Size of a grain of rice

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Muscular System
You use 200 muscles for every step you take!

• Largest (SA) latissimus dorsi in your back

• Longest sartorius across front of leg

• Smallest stapedius connects stapes in
  sensitive middle ear

• Strongest masseter in jaw

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E. Organism

• Example

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BODY CAVITIES
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I. Dorsal

• A. Cranial
• B. Spinal

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II. Ventral

• A.Thoracic
• 1. Mediastinum
• 2. Pleural
• B. Abdominal
• C. Pelvic

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Whats found in the thoracic cavity?

• Heart
• Lungs
• Esophagus
• Trachea

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Whats found in the abdominal cavity?

• Stomach
• Intestines
• Liver
• Kidneys

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Whats found in the pelvic cavity?

• Bladder
• Reproductive organs

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Regions of the Fetal Pig

• Cranial
• Pectoral
• Pelvic
• Caudal

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Directional Terminology

• Anterior
• Posterior
• Dorsal
• Ventral

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Exit Quiz put notes away

• Need a half sheet of paper
• Label 1 5 and dont forget your name
• Treat this like any other quiz. If youre looking
  at a neighbors paper, you will receive a zero.
• Reduce temptation cover your answers!

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• 1. Which of these cavities is NOT located in the
  ventral part of the body?
• Thoracic
• Abdominal
• Cranial
• Pelvic

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• 2. Which of these organs is NOT found in the
  abdominal cavity?
• A. Stomach
• B. Heart
• C. Liver
• D. Small intestine

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• 3. Which of the following correctly describes
  epithelial tissue?
• Used for movement of the organism
• Allows communication between body parts
• Connects various tissues in the body
• Covers your body and organs

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• 4. A group of cells that together perform a
  particular function is called a(n)
• A. Organism
• B. Organ system
• C. Organ
• D. Tissue

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• 5. The term that refers to the direction of the
  pig where the tail is located is
• A.Ventral
• B. Dorsal
• C. Posterior
• D. Anterior

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Estimate your pigs age
Size Time
40 mm 54 days
80 mm 68 days
100 mm 75 days
158 mm 86 days
22 cm 26 cm 28 cm 100 days 107 days 110 days
30 cm 114 days