An experiment was conducted with 100 volunteers and the following data was collected. Lactic Туре of acid level activity Average pulse (beats/minute Time to color change (indicator sol.) None Rest 74 28 seconds Low Step-ups 122 12 seconds High Wall sit 90 20 seconds Explain why numbers change for both types of activity when compared to the values at rest. (2 points) Explain what this data demonstrates about the different types of activities and types of cell respiration. (1 point for each data category - lactic acid, pulse, time to color change)

An experiment was conducted with 100 volunteers and the following data was collected. Lactic Туре of acid level activity Average pulse (beats/minute Time to color change (indicator sol.) None Rest 74 28 seconds Low Step-ups 122 12 seconds High Wall sit 90 20 seconds Explain why numbers change for both types of activity when compared to the values at rest. (2 points) Explain what this data demonstrates about the different types of activities and types of cell respiration. (1 point for each data category - lactic acid, pulse, time to color change)

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 4RE

See similar textbooks

Similar questions

which of the following is the best comparison of GABA and glutamate Select one: a. all of these are valid comparisons of glutamate and GABA b. too much GABA can cause excitotoxicity; too much glutamate can cause seizures c. post synaptic sites for glutamate are most likely on the dendrite ; post synaptic sites for GABA are most likely on the cell body d. glutamate acts on ionotropic receptors; GABA acts on metabotropic receptors e. they are both excitatory amino acid precursors ; GABA is a precursor to making glutamate
An effector neuron is a motor neuron that transmits impulses from the CNS to an effector (muscle or gland).In an experiment, it was determined that the effector neuron for muscle fibre 1 had a threshold level of –5 mV. The effector neuron for muscle fibre 2 had a threshold level of –16 mV. An electrical probe was used to stimulate these two effector neurons of the muscle fibres. Which of the following rows correctly identifies the reaction of each muscle fibre based on the applied stimulus voltage? Stimulus Voltage Muscle Fibre 1 Muscle Fibre 2 –20 mV Relaxed Contracted b. Stimulus Voltage Muscle Fibre 1 Muscle Fibre 2 –20 mV Contracted Relaxed c. Stimulus Voltage Muscle Fibre 1 Muscle Fibre 2 –10 mV Contracted Relaxed d. Stimulus Voltage Muscle Fibre 1 Muscle Fibre 2 –10 mV Relaxed Contracted
ATPase is an enzyme that can hydrolyse ATP and release the potential energy stored in the phosphate bond. How would a metabolic inhibitor that blocks ATPase function affect the resting potential of nerve cells?
Calculate the free energy of transport for the movement of potassium by the sodium/potassium pump under normal physiological conditions: 4 mM serum potassium, 135 mM intracellular potassium, 37.1 °C, and resting potential -82 mV. Express your answer in kJ/mol. Show all work. Calculate the free energy of transport for the movement of potassium by the sodium/potassium pump under disturbed conditions of 2 mM serum potassium. Assume all other parameters remain the same. Express your answer in kJ/mol. Show all work. What factors could limit the continued action of the sodium/potassium pump when only 2 mM potassium is present in the blood plasma? Note that under normal physiological conditions, the cell interior contains 11 mM sodium and the blood contains 140 mM sodium.
A decrease in blood pH causes the histidine side chain of Hb to become _____ favoring the _____ state and _____ its binding affinity for O2. (select one) a) Protonated; Tense; decreasing b) Deprotonated; Relaxed; decreasing c) Protonated; Tense; increasing d) Protonated; Relaxed; increasing e) Deprotonated; Tense; decreasing f) Deprotonated; Relaxed; increasing
Please ASAP. Thanks Ion Extracellular Concentration (mM) Intracellular Concentration (mM) Na+ 440 50 K+ 20 400 Cl- 560 52 Ca++ 10 1 What is the effect of the addition of extracellular TTX and TEA on equilibrium potential? TTX blocks K channel, and TEA blocks Na Channels. No change in the equilibrium potentail. TTX blocks Na channel and TEA blocks K Channels. The equilibrium potentials become less positive TTX blocks Na channel and TEA blocks K Channels. The equilibrium potential becomes more positive for both TTX blocks Na channel and TEA blocks K Channels. No change in the equilibrium potentail. TTX and TEA blocks Na channel. No change in the equilibrium potentail.
In your own words, describe the main events occurring between the arrivalof an action potential at a motor neuron end plate and contraction of thecorresponding muscle. Use 250 words or less.
In excitable cells, such as neurons, K+ is held at a much higher concentration inside the cell than outside. Which of the following would hold K+ at this concentration?
Muscle Contraction In an experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that synapses with one muscle ﬁber is observed in this experiment. One end of the muscle ﬁber is attached to a mass. The following data was obtained from the experiment. *attached document is chart with data 1. Does the data in the table provide sufficient evidence of the value for the threshold potential? Why or why not 2.a) A student remarked that at 180 mV of stimulus, it is expected that 100 g mass is lifted by the muscle fiber.b)Do you agree or disagree? Why or why not? 3.Identify the manipulated, responding and controlled variables in the experiment described above a) strength of stimulus ________ (manipulated, responding, or controlled) b) number of mucsle fibre stimulated _____ (maniuplated, repsonding, or controlled) c) mass lifted by muscle contraction ______ (manipulated, responding or controlled) 4. How would you modify this…
The resting membrane potential of a neuron or muscle cell is a. equal to the potassium equilibrium potential. b. equal to the sodium equilibrium potential. c. somewhat less negative than the potassium equilibrium potential. d. somewhat more positive than the sodium equilibrium potential. e. not changed by stimulation.
A muscle cell contains acetylcholine receptors that act as ligand-gated cation channels,and it also contains voltage-gated Na+ channels of the type found in neurons. Intheory, could a muscle cell get away with having only acetylcholine-gated cationchannels, which would serve the dual purpose of receiving neurotransmitter signalsand propagating action potentials? Why or why not?
How do you think AMPK (AMP-activated protein kinase) helps the athletes on achieving the "unexpected sudden strength" during high intensity activities? Make your answer brief and concise.