Single-stimulus contraction relaxation sequence in a muscle fiber.
Vary depending on type of muscle, location, internal and external environment,
and other factors.
Broken down into three phases
Latent Period: Begins at stimulation and last
As muscular activity increases, pattern of energy production and use changes
Resting Skeletal Muscle: Extra ATP converted to CP, Fatty Acids and Glucose
absorbed, Convert glucose to glycogen
Moderate Levels of Activity: Oxyge
During Recovery, oxygen remains above normal resting levels.
Additional oxygen consumption takes place in skeletal muscles
When oxygen debt is being repaid, breathing rate and depth are
Heat Production and Loss
Muscle contraction cr
Anaerobic endurance: Length of time muscular contraction can occur through
glycolysis and reserves of ATP/CP.
Limited by amount of ATP/CP, Glycogen, and Muscle Ability to tolerate
lactic acid generation
Aerobic endurance: Length of
Osseous tissue is highly vascular in order to promote growth.
The Nutrient Artery and Vein
Blood vessels that supply the diaphysis form by invading cartilage
Most only have one nutrient vein and artery.
Enter through nutrient foram
Periosteum & Endosteum
Isolates bone from surrounding tissues
Provides route for circulatory and nervous supply
Participates in bone growth and repair.
Typically continuous with connective tissue that lock the bones
Also interwoven wi
Characteristics of Bones
Osseous tissue is a supporting connective tissue.
Very dense and contains calcium salt deposits
Contains osteocytes within lacunae.
Typically arranged around blood vessels.
Narrow passageways through matrix, form
Support for the entire body
Storage of minerals and lipids
Lipids in yellow bone marrow
Blood Cell Production
In red bone marrow
Soft organs surrounded by skeletal structures
Bones act as levers
Relatively slender and long
Spindle shaped and has centrally located nucleus
No T-Tubules with SR forming loose network throughout sarcoplasm
Lacks sarcomeres, resulting in no striations
Thick filaments scattered throughout sarcoplasm,
Osteon: Basic functional unit of mature compact bone
Osteocytes arranged in concentric layers around a Haversian
Canal contains one or more blood vessels that run parallel
to the surface of the bone.