define
Standard body position: standing upright, facing forward, arms at sides, palms forward, feet slightly apart.
Anatomical Position
Strong connective tissue with tightly packed collagen fibers (tendons, ligaments).
Dense Fibrous Tissue
Receives signals.
Dendrite
Contains DNA; controls cell activities
Nucleus
Circular muscle that opens/closes a passage.
Sphincter
The body’s ability to maintain a stable internal environment
Homeostasis
Flexible connective tissue that cushions joints and provides structure.
Cartilage
Contains nucleus; controls the neuron.
Cell Body (Soma)
Fluid-filled sac that reduces friction in joints
Bursa
Elasticity – Ability to return to original shape.
Extensibility – Ability to stretch.
Contractility – Ability to shorten (contract).
Elasticity
Extensibility
Contractility
Molecules with a hydrophilic head and hydrophobic tails; make up the cell membrane.
Phospholipids
Turning palm upward.
Supination
Gaps in myelin where impulse jumps.
Node of Ranvier
Immovable joint in the skull.
Suture point
Fluid between lung and chest wall that reduces friction.
Pleural Fluid
Bone tissue; provides support, protection, and storage of minerals.
Osseous Tissue
Frontal (coronal) – Divides body into front/back.
Sagittal – Divides into left/right.
Transverse – Divides into top/bottom
Oblique – At an angle.
Planes
Produces myelin in PNS.
Schwann Cell
Fibrous – No movement (sutures).
Cartilaginous – Slight movement (vertebrae).
Synovial – Freely movable (knee, shoulder).
Types of Joints
Airways branching from trachea into lungs.
Bronchi
Smooth, glassy cartilage found in joints, nose, trachea; reduces friction.
Hyaline Cartilage
Sends impulses away from cell body.
Axon
Fatty covering that speeds signal transmission
Myelin Sheath
Connect bone to bone.
Ligaments
Air sacs where gas exchange occurs.
Alveoli