APHY 101 Ivy Tech Exam 4 Midterm Questions and Answers Latest Updated 2024/2025 Graded A+.

APHY 101 Ivy Tech Exam 4 Midterm Questions and Answers Latest Updated 2024/2025 Graded A+. Find the false statement below, if any, concerning the functions of the muscular system ANS It produces all types of blood cells. 2. What does the word "voluntary" mean, as it pertains to muscle tissue? ANS It means that the muscle tissue contracts in response to the person willing the action to occur. 3. Which of the following sets of characteristics correctly describes smooth muscle tissue? ANS Non-striated, single nucleus in each cell, involuntary, and arranged in layers. 4. Which types of muscle tissue is/are striated? ANS Skeletal and cardiac APHY 101 Ivy Tech Exam 4 Midterm Questions and Answers – Latest Updated 2024/2025 | Graded 2 / 8 5. The striations found in some muscle tissue are the result of ANS The banding pattern of actin and myosin filaments. 6. Perimysium ANS A layer of dense connective tissue that surrounds each fascicle in a skeletal muscle. 7. Tendon ANS A cord of dense connective tissue that connects a muscle to a bone. 8. Troponin ANS One of the proteins that forms a cap over the binding site on actin molecules, preventing crossbridging during muscle relaxation. 9. Sarcolemma ANS The cell membrane of a muscle fiber, which is arranged to allow electrical impulse conduction. 3 / 8 10. T-tubule ANS An organelle that folds inward from the cell membrane, and transmits impulses into a muscle fiber. 11. How is skeletal muscle unique? In other words, how is it different than the other types of muscle tissue? ANS It is the only one that is voluntary. 12. What is the function of the synaptic cleft in a neuromuscular junction? ANS It acts as a gap across which neurotransmitter molecules can travel from the neuron to the muscle fiber. 13. According to the sliding filament theory, what event occurs in each sarcomere that shortens a muscle during muscle contraction? ANS The myosin heads form crossbridges with the actin, and then flip over, pulling the actin. 14. What is the role of Ca+2 in the process of skeletal muscle contraction? 4 / 8 ANS It binds to and removes the "cap" from the binding sites on actin, so the myosin can form crossbridges with actin