Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159080
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 45, Problem 3.7A
The T wave corresponds to repolarization of the muscle fibers of the ________.
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The P wave corresponds to depolarization of the muscle fibers of the _______________________.
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The T wave corresponds to repolarization of the muscle fibers of the _______________________.
A smooth, sustained contraction from rapid stimulation of skeletal muscle fibers is called ________.
Chapter 45 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 45 - The _______ of the conduction system is known as...Ch. 45 - The ________ of the conduction system is/are...Ch. 45 - The first of two heart sounds (lubb) occurs when...Ch. 45 - One cardiac cycle would consist of a. left chamber...Ch. 45 - The SA node of the heart is located in the a....Ch. 45 - The depolarization of ventricular fibers is...Ch. 45 - The dupp sound occurs when the semilunar valves...Ch. 45 - The P wave of an ECG occurs during the...Ch. 45 - The period during a heart is contracting is called...Ch. 45 - The period during which a heart chamber is...
Ch. 45 - During ventricular contraction, the AV valves...Ch. 45 - During ventricular relaxation, the AV valves are...Ch. 45 - The pulmonary and aortic valves open when the...Ch. 45 - The first sound of a cardiac cycle occurs when the...Ch. 45 - The second sound of a cardiac cycle occurs when...Ch. 45 - The sound created when blood leaks back through an...Ch. 45 - What changes did you note in the heart sounds when...Ch. 45 - What changes did you note in the heart sounds...Ch. 45 - Prob. 3.1ACh. 45 - The ____________________ node is located in the...Ch. 45 - The fibers that carry cardiac impulses from the...Ch. 45 - Prob. 3.4ACh. 45 - The P wave corresponds to depolarization of the...Ch. 45 - The QRS complex corresponds to depolarization of...Ch. 45 - The T wave corresponds to repolarization of the...Ch. 45 - Why is atrial repolarization not observed in the...Ch. 45 - Identify the heart chambers and conduction system...Ch. 45 - How much time passed from the beginning of the P...Ch. 45 - What is the significance of this P-R interval?Ch. 45 - How can you determine heart rate from an...Ch. 45 - As blood in the ventricles surges back against the...
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- Modified muscle fibers serving primarily to detect stretch are called _________ .arrow_forwardThe biceps reflex tests a muscle spindle reflex arc (like the patellar reflex). The biceps brachii is innervated by the musculocutaneous nerve and the triceps brachii is innervated by the radial nerve. When the biceps tendon is tapped with a hammer, action potential generation ___________ in the musculocutaneous nerve and _____________ in the radial nerve. Select one: a. Increases; decreases b. Decreases; increases c. Decreases; decreases d. Increases; increasesarrow_forwardPassive force in skeletal muscle fibers is generated by ______________________ the muscle.arrow_forward
- Neurons release _____________from the axon terminus in order to locally depolarize the postsynaptic membrane of skeletal muscles (sarcolemma).arrow_forwardA muscle contraction that occurs without the muscle shortening (like tryiing life an immovable object) is called __________________ contraction.arrow_forwardThe region where a motor nerve fiber meets a skeletal muscle fiber is called a/an _____.arrow_forward
- A (low or high frequency) of action potentials results in the fusion of muscle twitches to produce (incomplete tetanus or complete tetanus).arrow_forward___________ crosses the synapse between a motor neuron and a muscle fiber and is responsibile for stimulating muscle contraction.arrow_forwardInternal arcuate fibers and medial lemniscus fibers refer to one and the same fibers moving in a circular direction. TRUE OR FALSEarrow_forward
- Myoclonus is the sudden, involuntary jerking of a muscle or group of muscles. _______________ _______________ _______________ _______________arrow_forwardA presynaptic nerve fiber cannot cause ther neurons in its _________ to fire, but it can make them more sensitive to stimulation from other presynaptic fibers.arrow_forwardIf we stimulate a skeletal muscle at a voltage above the maximal stimulus voltage and above the fusion frequency, the resulting contraction will exert the _______________________ (3 words).arrow_forward
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