Axial Head Neck Trunk/Torso › Thorax :upper portion (superior) › Abdomen: midportion ›...

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Organization of the Human Body Chapter 1 Pgs 19-20

Transcript of Axial Head Neck Trunk/Torso › Thorax :upper portion (superior) › Abdomen: midportion ›...

Page 1: Axial  Head  Neck  Trunk/Torso › Thorax :upper portion (superior) › Abdomen: midportion › Pelvis: lower portion (inferior) Appendicular  Pectoral.

Organization of the Human Body

Chapter 1Pgs 19-20

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Body Regions

Axial Head Neck Trunk/Torso

› Thorax :upper portion (superior)

› Abdomen: midportion› Pelvis: lower portion

(inferior)

Appendicular Pectoral girdle &

upper limbs Pelvic girdle & lower

limbs

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Body Cavities

Spaces within the body which house the internal organs (viscera).

Consists of two main cavities:1. Dorsal cavity-the cavity along the back,

posterior side of the body2. Ventral cavity-the cavity along the front,

anterior side of the body

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Subdivisions of Body Cavities

Dorsal Cavity Towards Back

Cranial cavity (head) Spinal/vertebral

cavity (neck, thorax, abdomen)

Ventral CavityTowards Front

Orbital cavities (head) Nasal cavities (head) Oral cavities (head) Otic Cavities (head) Thoracic cavity (thorax)

› Pericardial cavity› Pleural cavities

Abdominopelvic cavity (abdomen & pelvis)› Abdominal cavity› Pelvic cavity

Two major cavities within the axial portion:

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Body MembranesSheets of tissue that serve to protect body

structures.Serous Membranes

› Double layered sheets of connective tissue separated by a small amount of fluid1. Parietal layer-outer layer, forms the outer

boundary of the cavity2. Visceral layer-inner layer, sits directly on the organ

it covers› Serous fluid-secreted from the membrane to

separate the parietal & visceral layers.

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Body Membranes cont.

Peritoneal Membranes Covers the stomach, liver, spleen,

gallbladder, small & large intestine in the abdominal cavity.

Covers the distal end of the large intestine, bladder & internal reproductive organs in the pelvic cavity.

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Body Systems

Body Systems consist of a collection of organs that work together to perform a specific task or function.

Cardiovascular Digestive Endocrine Integumentary Lymphatic Muscular Nervous Reproductive Respiratory Skeletal Urinary

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