Module 2 Flashcards
Anatomy
Structure of the body
Physiology
Function of the body
Homeostasis
The biological process of maintaining equilibrium
Elements
Pure substance
Atom
Smallest unit of an element
Molecule
Two or more atoms
Cell
Smallest independently functioning organism
Tissue
A group of similar cells working toward the same function
Organ
Anatomically district structure with two or more types of tissue
Organ system
A group of organs that work together
Organism
Independently living system
Anatomical position
Standing upright, feet shoulder width apart, toes forward, upper limbs held down with palms forward
Prone
Lying on the abdomen, facing downward
Supine
Lying on the back facing upwards
Anterior (ventral)
In front
Posterior (dorsal)
Back/behind
Superior (cranial)
Above/higher
Inferior (caudal)
Below/lower
Near or toward the tail
Lateral
On the side
Toward the side
Medial
In the middle
Toward the middle
Proximal
Nearer the point of attachment or the trunk
Distal
Farther from the point of attachment or the trunk
Superficial
Nearer the surface
Deep
Farther from the surface
Sagittal plane
Divides the body vertically into right and left sides
Midsagittal/medial plane
Divides the body into equal right and left parts
Parasagittal/longitudinal plane
Divides the body into unequal right and left sides
Frontal plane
Divides the body vertically into posterior and anterior portions
Transverse plane
Divides the body horizontally into upper and lower portions
Dorsal (posterior) cavity
Includes the cranial and spinal cavities
Ventral (anterior) cavity
Includes the abdominopelvic and thoracic cavities
Cranial cavity
The space in the skull that houses the brain (filled with cerebrospinal fluid)
Spinal cavity
Space in the vertebra that houses the spinal cord (filled with cerebrospinal fluid)
Thoracic cavity
Space inside the ribs (diaphragm forms the floor) that houses the lungs and heart
Abdominopelvic cavity
Houses the digestive and reproductive organs and the pelvic cavity
Largest body cavity
Tissue membrane
Thin layer or sheet of cells that cover the body, organs, passageways, or movable joint cavities
Connective tissue membrane
Formed solely from connective tissue
Encapsulates organs and lines movable joints
Synovial membrane
Lines the cavity of freely movable joints
Epithelial membrane
Composed of epithelium attached to connective tissue
Lines passageways
Mucous membrane
Composed of connective and epithelial membrane
Cutaneous membrane
Skin (epithelial membrane)
Membranes of the anterior body cavity
Serous membrane
- parietal layers
- visceral layers
Pleura
Pericardium
Peritoneum
Serous membrane
Epithelial membrane supported by connective tissue
Parietal layers (serous membrane)
Line the walls of the body cavities
Visceral layer (serous membrane)
Covers the organs
Serous space
Between the parietal and visceral layers
Pleura
Surrounds the lungs in the pleura cavity
Pericardium
Surrounds the heart in the pericardial cavity
Peritoneum
Surrounds several organs in the abdominopelvic cavity