TISSUES AND SYSTEMSAN OVERVIEW

ORDER OF ORGANIZATION• (Protoplasm-) Atoms• Molecules• Organelles - • Cells• tissues- • organs- • organ system- • organism

TISSUES

•Cells of same type joined together•60%–99% water•Groups of tissues

•Epithelial•Connective•Nerve•Muscle

SYSTEMS OF THE BODY• Integumentary• Muscular• Skeletal• Blood and Cardiovascular• Lymphatic• Respiratory• Digestive• Nervous and Senses• Urinary• Endocrine• Reproductive

SUMMARY• Protoplasm is basic substance of life• Protoplasm forms structural units called cells• Cells combine to form tissue• Tissues combine to form organs• Organs and other parts combine to form systems

• Systems work together to create miracle of human body

BODY PLANES, CAVITIES, DIRECTIONS

• Body planes: imaginary lines drawn through body at various levels to separate body into sections

• Directional terms are created by planes• Transverse plane• Midsagittal or median plane• Frontal or coronal plane• Proximal and distal: transverse

CAVITIES• Spaces within the body that contain vital organs

• Dorsal or posterior cavity: on back of body• Cranial Cavity• Spinal Cavity

• Ventral or anterior cavities: on front of body• Thoracic cavity• Abdominal cavity• Pelvic cavity

BODY CAVITIES• Three Small Cavities:

• Orbital: Eyes• Nasal: For nose structures• Buccal: For teeth and tongue

ABDOMINAL REGIONS• Abdominal cavity is separated into regions or sections because it is so large

• Quadrants• RUQ• LUQ• RLQ• LLQ

ABDOMINAL REGIONS• Regions

• Epigastric: Upper Center Region above stomach

• Umbilical: Middle center region by umbilicus• Hypogastric: Lower center region• Hypochondriac: on either side below ribs• Lumbar: On either side of large bones on spinal cord

• Iliac or inguinal: On either side of groin