CANFITPRO CHPT 6- Muscular Anatomy Exam Questions and Answers 100% Correct

CANFITPRO CHPT 6- Muscular Anatomy Exam Questions and Answers 100% Correct 4 characteristics of muscle tissue - Correct Answer ️️ -excitability, contractility, extensibility, elasticity 3 types of muscle tissue - Correct Answer ️️ -skeletal, cardiac, smooth functions of muscle tissue - Correct Answer ️️ -Skeletal muscle: connects to the skeletal system by being attached to 2 bones Cardiac muscle: interconnected so when one cell contracts, all contracts Smooth muscle: found in organs of digestive, urinary and circulatory system. Works collectively or independently How many skeletal muscles are in the body? - Correct Answer ️️ -over 600 Skeletal muscle function - Correct Answer ️️ -movement, maintain upright posture, and generate heat to maintain body temperature Muscle cells are primarily ______ water Well organized set of proteins _____ - Correct Answer ️️ -73 % water 24% proteins Muscle fibers - Correct Answer ️️ -thousands of elongated, rod shaped cells Fascicle - Correct Answer ️️ -held together by connective tissue layer called perimysium Each muscle fiber is surrounded by a thin elastic membrane called ______ that encloses the contents of fiber - Correct Answer ️️ -sacrolemma 2 types of proteins in sacromere - Correct Answer ️️ -thin filament: actin Thick filament: myosin Types of muscle contractions - Correct Answer ️️ -concentric: shortens eccentric: lengthens isometric: no change in muscle length Skeletal muscle contractions is controlled by ________ - Correct Answer ️️ -Nervous System CNS (central nervous system) - Correct Answer ️️ -consists of the brain and spinal cord It's the control centre of nervous system as it receives information from PNS and develops appropriate response PNS (peripheral nervous system) - Correct Answer ️️ -made up of nerves that connect the extremities to the CNS. Continuously delivers info about all body part to the brain to process sensory neurons (afferent) - Correct Answer ️️ -Carry information and sensation from the body and environment to the CNS motor neurons (efferent) - Correct Answer ️️ -carry information from the CNS back to the muscles to create a response or movement Proprioceptors - Correct Answer ️️ -- specialized sensory receptors found in joints, muscles and tendons. - Sensitive to pressure and tension - responsible for sending messages to CNS to maintain muscle tone and perform coordinated movements Muscle spindles - Correct Answer ️️ -type of proprioceptors that consists of several modified muscle fibers GTO (golgi tendon organ) - Correct Answer ️️ -only activated when muscle contracts slow twitch muscle fibers - Correct Answer ️️ -- perform slow and controlled muscle contractions -contracts slow, resistant to fatigue, work aerobically - better for long endurance activity (marathon) fast twitch muscle fibers - Correct Answer ️️ -- Quick, high-intensity contractions - contract faster, fatigue faster, work anaerobically - e.g. sprinters force that a muscle can generate - Correct Answer ️️ -muscle size A muscle has potential to generate its greatest force when it is at its r