Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 29, Problem 2.11A
In a stretch reflex arc, when the agonist muscle contracts reciprocal inhibition occurs in its ________________________ muscle.
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Passive force in skeletal muscle fibers is generated by ______________________ the muscle.
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Chapter 29 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 29 - The impulse over a motor neuron will lead to a. an...Ch. 29 - Stretch reflex receptors are called a. effectors....Ch. 29 - Stretch reflexes include ail of the following...Ch. 29 - Prob. 4PLCh. 29 - Prob. 5PLCh. 29 - The quadriceps femoris is the effector muscle of...Ch. 29 - The posterior roots of spinal nerves contain the...Ch. 29 - The normal patellar reflex response involves...Ch. 29 - A withdrawal reflex employs...Ch. 29 - Interneurons in a withdrawal reflex are located in...
Ch. 29 - A reflex arc begins with the stimulation of a...Ch. 29 - Effectors of somatic reflex arcs are...Ch. 29 - Prob. 2.5ACh. 29 - The effector muscle of the patellar reflex is the...Ch. 29 - The sensory stretch receptors (muscle spindles) of...Ch. 29 - The posterior root of a spinal nerve contains the...Ch. 29 - The normal plantar reflex results in...Ch. 29 - Stroking the sole of the foot in infants results...Ch. 29 - In a stretch reflex arc, when the agonist muscle...Ch. 29 - Synapses, whether excitatory or inhibitory, occur...Ch. 29 - Prob. 2.13ACh. 29 - Prob. 2.14A
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- Is the length of muscle contraction at the beginning of tetanic contraction the same or different from the lengthof the single muscle contractions before tetanic contraction occurred? ___________ How do you explain this?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 _______________________arrow_forwardThe _______________________ of a muscle is usually attached to a movable part.arrow_forward
- Both the withdrawal reflex and the Golgi tendon reflex involve sensory signals that ultimately control the same type ofmotor neurons and both are protective. Explain how one reflex can cause muscle contraction while the other causes musclerelaxation.arrow_forwarda contraction in which a muscle shortens in length is called an ____________contraction.arrow_forwardThe _______________________ of a muscle is usually attached to a fixed part.arrow_forward
- A muscle contraction that occurs without the muscle shortening (like tryiing life an immovable object) is called __________________ contraction.arrow_forwardA (low or high frequency) of action potentials results in the fusion of muscle twitches to produce (incomplete tetanus or complete tetanus).arrow_forwardSkeletal muscle is associated to the _________________. What makes up the muscle fiber?arrow_forward
- For the initial 10-12 seconds of muscle contraction, the ATP is provided by__________________.arrow_forwardFill in the blank: The effector of the knee-jerk reflex is the _______________________ muscle.arrow_forwardMuscle Activity: Name:_______________________________________Use your text/lab manual/online resources to answer these questions.Neuromuscular junction (NMJ)—where the motor neurons direct conscious movement, and reflex movement:What is the motor end plate?What is acetylcholine (ACh)? What does it do?What is the role of calcium at the NMJ, and in the sarcomere?Know these terms and how they relate to muscle contraction:Neuromuscular junction (NMJ)SarcomereMyosin (a myofilament)Actin (a myofilament)TropomyosinTroponinATP & calciumWhat is a “cross-bridge”? (Does the power stroke of one cross-bridge produce the contraction of an entire muscle?Briefly describe why contraction of the muscle cell is called “sliding filament theory” (what is sliding?) and what do we mean by “excitation-contraction coupling?” (What is being excited, and what is coupled?)If we need ATP for both contraction and relaxation, how would you explain…arrow_forward
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