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Plasticity - Correct Answer The ability of smooth muscle to function over a wide range of lengths is called H band - Correct Answer The area in the center of the A band that contains no thin filaments is the Slow - Correct Answer The type of muscle fiber that is most resistant to fatigue is the fiber. Complete tetanus - Correct Answer When a muscle is stimulated repeatedly at a high rate, the amount of tension gradually increases to a steady maximum tension. This is called Myoblasts - Correct Answer Skeletal muscle fibers are formed from embryonic cells called Repeated, exhaustive stimulation - Correct Answer Fast muscle fibers can adapt to aerobic metabolism by generating more mitochondria in response to Endomysium - Correct Answer The delicate connective tissue that surrounds the skeletal muscle fibers and ties adjacent muscle fibers together is the Calcium binds to troponin. - Correct Answer Active sites on the actin become available for binding after Motor end plate - Correct Answer Receptors for acetylcholine are located on the Muscle contraction - Correct Answer Interactions between actin and myosin filaments of the sarcomere are responsible for Extend the forearm. - Correct Answer Triceps brachii insert on the olecranon process of the ulna and can act to All of the above - Correct Answer Which of the following is a member of the hamstring group? Head - Correct Answer Muscles including the term capitis would be found within or attached to the Whether or not the impulse begins in the CNS - Correct Answer Which of the following does not influence the time necessary for a nerve impulse to be transmitted? Depolarization and increased positive charge inside the neuron - Correct Answer Opening of sodium channels in the axon membrane causes 3 sodium ions into the cell for 2 potassium ions out of the cell - Correct Answer At the normal resting potential of a typical neuron, its Na-K ion exchange pump transports 4, 6, 7, 1, 2, 3, 5 - Correct Answer The following are the main steps in the generation of an action potential. 1. Sodium channels are inactivated. 2. Voltage-gated potassium channels open and potassium moves out of the cell, initiating repolarization. 3. Sodium channels regain their normal properties. 4. A graded depolarization brings an area of an excitable membrane to threshold. 5. A temporary hyperpolarization occurs. 6. Sodium channel activation occurs. 7. Sodium ions enter the cell and depolarization occurs. The proper sequence of these events is: Multipolar - Correct Answer The most abundant class of neuron in the central nervous system is Direct long-term functions, such as growth - Correct Answer Which of the following is not a function of the nervous system? Satellite cells - Correct Answer Which of the following are a type of glial cell found in the peripheral nervous system? Perikaryon - Correct Answer The cytoplasm that surrounds the nucleus of a neuron is called the Interoceptors - Correct Answer These sensory neurons monitor the digestive, respiratory, cardiovascular, urinary and reproductive systems. Somatic - Correct Answer The nervous system controls the skeletal muscles. Motor unit - Correct Answer all the muscle fibers controlled by a single motor neuron 1.Release of Ca2+ from sarcoplasmic reticulum (SR) 2.Ca2+ trigger interactions between thick & thin filaments 3.Muscle fibers contract, consume ATP 4.Produces active tension - Correct Answer Know the steps of excitation- contraction coupling in order. Storage molecule for excess ATP energy in resting muscle - Correct Answer What is the function of creatine phosphate? Generated by increase in Na+ in sarcolemma travels along the T tubules, leads to excitation-contraction coupling - Correct Answer What triggers action potential in the muscle cell? The neurotransmitter is not able to act on that receptor. Most of the time, the neurotransmitter will then be taken back up by the neuron that released it, ina process known as "reuptake". - Correct Answer What would happen if the receptors for acetylcholine were blocked? Is a neurotransmitter that is often associated with the activation of muscles but is also involved in the cholinergic system which often results in inhibitory actions - Correct Answer What is the function of acetylcholine? Receptors are found on the surface of muscle cells, concentrated in the synapse between nerve cells and muscle cells. - Correct Answer Where do these molecules attach?(sarcoplasm reticulum) Lactic acid to pyruvic acid to glucose to glycogen - Correct Answer In the cori cycle what does the liver produce glucose from? Calcium ions during muscle contraction and absorb them during relaxation. - Correct Answer What does the sarcoplasm reticulum release in response to the action potential? Orbicularis Oris - Correct Answer What is the kissing muscle? Superior rectus muscle and inferior rectus muscle - Correct Answer What muscles allow the eye to look up? Down? Functions to move the eyebrow down and inward toward the nose and inner eye. - Correct Answer What action does the corrugator supercilii do? To pull the scapula forward around the thorax. - Correct Answer What is the action of the serratus anterior? Adductor pollicis - Correct Answer adducts the thumb? Triceps - Correct Answer Extends arms in a push up? Semimembranosus - Correct Answer Flex the leg? Diaphragm - Correct Answer Damage to what muscles would interfere with the ability to breathe? Bucccinator - Correct Answer Covers the anterior surface of the neck? Is a tendinous raphe extending from the xiphoid process to the symphysis pubis and pubic crest. - Correct Answer Where is the linea alba located? Teres minor - Correct Answer What muscle adducts/rotates scapula laterally? Spinalis Cervicis and Spinalis Capitus - Correct Answer Extends the neck? Brachial plexus - Correct Answer What plexus does ulnar nerve arise Phrenic nerve - Correct Answer What nerve arises in cervical plexus, innervates diaphragm - Correct Answer 
