Test 3 Flashcards
Functions of the Skeletal System?
Support Mineral and Fat Storage Blood Cell Production Protection Leverage Movement
Composition of Bone Tissue
Non-Living Portion Extracellular Matrix
25% Interstitial Fluid
25% Collagen Fibers
50% Mineral Mainly Calcium Phosphate
4 Types of Bone Cells
Osteogenic
Osteoblasts
Osteocytes
Osteoclasts
Types of bone tissues?
Spongy
Compact
Types of Connective Tissue Covering
Periosteum
Endosteum
Remodeling
5-1% of bone tissue is remodeled weekly to prevent the crystalization of the minerals within the bone. Take out old minerals to put in new minerals.
Functions of the Nervous System
Controls and regulates all other body systems.
2 Subdivisions of The Nervous System
Central Nervous System
Peripheral Nervous System
Neurotransmitter
chemical signal for neurons to communicate to each other. Can be excitatory or inhibitory.
Goal of Neurophysiology
Development of an action potential (A.P.)
Repolarization
Return inner membrane chargeback to negative.
Hyperpolarization
inner membrane charge is below the resting potential value.
Threshold
The inner membrane charges reach a value that once reached the development of an A.P. cannot be stopped.
Skeletal Muscle Systems Function
Produce the force for movement
Stabilize joints
Maintain body position
Thermogenesis
Characteristics of Skeletal Muscle Systems
Excitability(irritability)
Contractility
Extensibility
Elasticity
