similar to peak bone mass: approximately 30 Similar to menopause: approximately 50 Into the 60's into the 70's into the 80's

Why does continuouns calcium release within a muscle fiber cause greater tension? Acticates more calcium pump  Activates myofibrils continuously  Increase action potential frequency  Lengthens sarcomere

Describe the difference in distribution of these three types of muscle fiber: slow twitch, fast twitch oxidative and fast twitch glycolyticfibers between the sexes

With muscular dystrophy, the membrane of muscle cells is destroyed. Given how muscle cells contract, which of the following would fail to happen? Reuptake of acetylcholine by the muscle cells ) Reuptake of acetylcholine by lower motor neurons ) Action potential conduction on muscle cells Action potential conduction on the lower motor neurons

Muscle fibres which characterize skeletal and cardiac muscle (dark-light bands):   muscle budle   myosin   sacromere   filaments Frontal view of the lower leg   anterior view of the fibula   anterior view of the femur   distal view of the calcaneus   sagittal view of the tibia Cross-section of the breastbone:   sagittal view of the scapula   sagittal view of the sternum   transverse view of the scapula   transverse view of the clavicle The system producing most of the energy in a long workout:   phosphocraitin   anaerobic   anaerobic alactic   aerobic The moment of inertia depends on:   the moment of force   the…

Which of the following would NOT occur as a result of regular exercise to a specific muscle group (assume you are resting now, but have been working this muscle group)? more capillaries will grow into the area the muscle cells will build more mitochondria O the muscle cells will build fewer contractile proteins O the muscle cells will increase their glycogen stores

The changes related to muscle mobility are the most obvious in older adult. There can be measurable differences in muscle strength, endurance, range of motion, coordination, elasticity, and flexibility of connective tissue. Regular exercise is necessary to prevent a decrease in muscle strength. Exercise helps to strengthen muscles and keeps joints, tendons, and ligaments more flexible, allowing for a more active lifestyle. Please research and describe some activities you could recommend to an elderly patient to stay active to help them maintain muscle mass

What happens when the muscular action potential spreads through transverse (T) tubules of the sarcolemma?    The action potential in T tubules triggers the release of acetylcholine from the axon terminals of the motor neuron.   The action potential in T tubules triggers closing of sodium channels and opening of potassium channels, which enables myosin cross bridges to form.   The action potential in T tubules opens voltage-sensitive calcium channels in the T tubules, allowing calcium to flow into the sarcoplasm.   The action potential in T tubules causes a shape change in voltage-sensitive proteins that pull open calcium channels in the sarcoplasmic reticulum.

A muscle cannot respond to appropriate nerve stimuli. Which muscle characteristic is impaired? Contractility Extensibility Elasticity Irritability

What two types of muscle cells need both extracellular and introcellular calcium to contract? Skeletal muscle and smooth muscle  Skeletal muscle and cardiac muscle  Smooth muscle and cardiac muscle