HLSC 2F95 Lecture Notes - Horizontal Plane, Organism, Mediastinum
Document Summary
Anatomical position: eyes forward, standing tall, palms face up, feet hip width apart. Planes: frontal (front and back halves, sagittal (sides) Median (midsagittal) = divide body in half right left. Longitudinal (top to bottom: transverse (across separating the upper and lower halves) (cut in half) Lateral (away from midline) to: medial (towards midline) also to: distal (away from body towards feet) 4 quadrants in the abdominals: upper left, upper right, lower left, lower right. Study figure 1-14 in textbook (body cavities) *** Figure 1. 14: ventral body cavity: provides protection, allows organ movement, prevents friction. Right pleura (lung)l, mediastinum (trachea), left pleural abdominal ( organs), pelvic cavity ( bladder) Body cavities appear during embryonic development (2 main ones: dorsal (cushions cns and protects, ventral (protection, prevents friction for organs from lining) Ventral (2 main parts): thoracic (surrounds chest/diaphragm, abdominal cavity (contains pericardial cavity)
