Chapter 11, Problem 3RQ

_____ contraction drives blood through the systemic and pulmonary circuits; outside the heart, blood pressure is highest in the _____. a. Atrial; ventricles b. Atrial; atria c. Ventricular; arteries d. Ventricular; aorta

Any abnormal condition of skeletal muscles is known as _______________________.

Sarcopenia is the loss of muscle mass, strength, and function that comes with aging. _______________ _______________ _______________ _______________

Depolarization of the sarcolemma means ________. the inside of the membrane has become Less negative as sodium ions accumulate the outside of the membrane has become less negative as sodium ions accumulate the inside of the membrane has become more negative as sodium ions accumulate the sarcolemma has completely lost any electrical charge

Skeletal muscle contraction requires _________. a. calcium ions b. ATP c. arrival of a nerve impulse d. all of the above

In bone, the main cells are ________.a. fibroblastsb. chondrocytesc. lymphocytesd. osteocytes

All of the following play a role in calcium homeostasis except a. thyroxine b. calcitonin c. parathyroid hormone d. vitamin D

Which of the following muscle types and characteristic is correctly matched? Group of answer choices Cardiac muscle : dense body anchoring proteins Skeletal muscle : varicosity at neuromuscular junctions Smooth muscle : Calcium-calmodulin regulation of myosin light chain kinase Cardiac muscle : calcium only from the sarcoplasmic reticulum

Which of the following is NOT associated with cardiac muscle contraction?   Contraction requires myosin light-chain kinase activity.   Electromechanical calcium release mechanism.   Contraction based on the sliding filaments theory.   Troponin as calcium-sensing protein.   Calcium-induced calcium release mechanism.