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Human Anatomy. Introduction. Do Now. The spinal cord is ____________ to the esophagus The larynx is _____________ to the trachea Tommy is cutting down a tree with a chain saw – it slips and cuts off his head. What type of cut is this ? (What Plane).

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Human anatomy

Human Anatomy


Do now
Do Now

The spinal cord is ____________ to the esophagus

The larynx is _____________ to the trachea

Tommy is cutting down a tree with a chain saw – it slips and cuts off his head. What type of cut is this? (What Plane)

  • Regional terms – names of specific body areas

    • Axial region – the main axis of the body

    • Appendicular region – the limbs

  • Directional terminology

    • Refers to the body in anatomical position

    • Standardized terms of directions are paired terms

Body planes and sections1
Body Planes and Sections

  • Coronal (frontal) plane - Lies vertically and divides body into anterior (front) and posterior (back) parts

  • Sagittal plane – lies vertically and divides the body into left and right sides.

    • Median (midsagittal) plane - Specific sagittal plane that lies vertically in the midline

  • Transverse plane - runs horizontally and divides body into superior (up) and inferior (down) parts

Body Planes and Sections

  • Oblique section through the trunk

Figure 1.6

Body cavities and membranes
Body Cavities and Membranes

  • Dorsal body cavity

  • Cavity subdivided into the cranial cavity and the vertebral cavity.

    • Cranial cavity houses the brain.

    • Vertebral cavity runs through the vertebral column and encloses the spinal cord

Body cavities and membranes1
Body Cavities and Membranes

  • Ventral body cavity – subdivided into:

    • Thoracic cavity – divided into three parts

      • Two lateral parts each containing a lung surrounded by a pleural cavity

      • Mediastinum – contains the heart surrounded by the pericardial sac

Body cavities and membranes2
Body Cavities and Membranes

  • Ventral body cavity

    • Abdominopelvic cavity – divided into two parts

      • Abdominal cavity – contains the liver, stomach, kidneys, and other organs

      • Pelvic cavity – contains the bladder, some reproductive organs, and rectum

Body cavities and membranes3
Body Cavities and Membranes

  • Serous cavities – a slit-like space lined by a serous membrane

    • Pleura, pericardium, and peritoneum

      • Parietal serosa – outer wall of the cavity

      • Visceral serosa covers the visceral organs

Other body cavities
Other Body Cavities

  • Oral cavity

  • Nasal cavity

  • Orbital cavities

  • Middle ear cavities

  • Synovial cavities

Abdominal regions and quadrants
Abdominal Regions and Quadrants

  • Abdominal regions divide the abdomen into nine regions

Abdominal quadrants
Abdominal Quadrants

  • Abdominal quadrants divide the abdomen into four quadrants

    • Right upper and left upper quadrants

    • Right lower and left lower quadrants