Which of the following would you use to inhibit the contraction of muscle in vitro as a control for an experiment you are conducting? (please answer with A, B, C, or D) A. a motor protein ATPase inhibitor
B. a drug that increases T-tubule depolarization
C. a drug that increases sarcoplasm Ca2+ concentration
D. All would inhibit muscle contraction.
A. a motor protein ATPase inhibitor.
The ATPase inhibitor helps to inhibit the contraction of muscle in vitro as a control for an experiment which we are conducting.
Which of the following would you use to inhibit the contraction of muscle in vitro as...
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. A. Ryanodine receptors open B. Voltage-gated Na+ channels open in the muscle cell membrane near the neuromuscular junction C. Tropomyosin rotates into the groove of the thin filament (out of the way of the myosin binding site) D. Depolarization of motoneuron axon terminal E. Ca2+ dissociates from troponin F. [Ca2+] rises in the muscle cell cytoplasm G. An EPSP occurs in the muscle cell H. Myosin...
QUESTION 7 What happens (immediately) if T-tubules blocked in skeletal muscle action potential increased an action potential blocked from progressing in fibril Myosin phosphatase in muscle O4(MP) activated d. inactivated QUESTION 8 Can be activated by stretch receptors (best answer only) a. Skeletal muscle Ob. smooth muscle Oc. myosin light chain phosphataso Od. A and B QUESTION 9 Action potential leads to activation of neurotransmitter in muscle answer true or false a true b. false c. not sure od silly...
1.During skeletal muscle contraction, the following occurs except A)ATP hydrolysis directly causes the movement of the myosin head to cause a power stroke B)When the myosin head releases a phosphate, it can bind actin C)When a new ATP binds to a myosin head, it releases actin D)ATP hydrolysis activates the myosin head so it can bind actin E)When the myosin head binding actin releases ADP, it moves to create the power stroke 2.During skeletal muscle contraction, the length of the...
10) When a muscle fiber enters fatigue, which metabolite below typically does NOT significantly change in concentration? A) ATP B) P G Ca2+ D) Lactic acid E) K* 11) Which is the most accurate definition of a motor unit? A) The mimimum number of muscle fibers required to move a load B) The number of crossbridges formed in a given length of muscle fiber C) The number of muscles innervated by a single nerve D) One motor neuron and all...
1. During muscle contraction, hydrolysis of ATP results in A) a change in the conformation of actin B) a change in the conformation of myosin C) association of myosin head to actin D) dissociation of myosin from actin E) no effect on muscle contraction 2. The steady state assumption, as a to monosubstrate enzyme kinetics, implies: A) Concentration of substrate is not changing B) Concentration of product is not changing C) Concentration of ES complex is not changing D) Formation...
Please help me with several of these questions, thank you very much. 1. During the propagation of an action potential along the axon of a neuron, what is happening at the leading edge (the front) of the region of depolarization as it moves down the axon? a. Ligand-gated Na+channels are opening. b. Voltage-gated Na+channels are opening. c. Ligand-gated K+channels are opening. d. Voltage-gated Na+channels have become inactive and refractory. e. Voltage-gated Na+channels are closing. 2. During transcellular transport of glucose...
1. (2 points) If you were given a microscope slide with an unknown type of muscle tissue, what features would you look for to determine whether the tissue was smooth muscle or skeletal muscle? Give 2 characteristics that would allow you to distinguish between these tissue types. Be sure to state which type of muscle has the characteristics you describe.) 2. Give 3 examples of different types of connective tissues found within the body and briefly note one function of...
uestlon Which of the following hormones increases smooth muscle contraction |a) oxytocin b) T3 c) cortisol d) glucagon exchanged during normal breathing Question 110 (1 point) Water intoxication results in a) Decrease in water intake Ob) Decreased aldosterone secretion c) Increase in the osmolarity of interstitial fluids d) Osmosis of water from ECF to ICF e) Osmosis of water from ICF to ECF Submit Quiz 62 of 110 questions saved 373
Inhibition of acetylcholine esterase at the neuromuscular junction would result in which of the following? a) No change in muscle contraction frequency b) Increased crossbridge formation c) Decreased Na+ influx d) Decreased Ca2+ release from the sarcoplasmic reticulum
Which protein molecule covers and ides the bindingston the actin bert During contraction of muscle fiber sliding o montina sarcom makes the one become arger Which type of neurogalls are Tropomni-troponin O b. myosin blood-brain bar TRUE FALSE a Schance Odrocytes Select one TRUE FALSE the layer of connective Which of the following neuroga are NOT found in the CNS a Schools Olodendrocytes Astrocytes Endom b. Perimysium О с. Itemyum Weblink for Virtual Class meetings Collections of myelinated in the...