Question

Which part of this sentence is wrong? "The depolarizationphase of an actionpotential in an axon, skeletal...

Which part of this sentence is wrong?

"The depolarizationphase of an actionpotential in an axon, skeletal muscle and heartmuscle cell, are the concequences of transmembrane sodium flow."

Is it because it's not in an axon but in the triggerzone? Or because of something else?

Thx in advance
Science   Anatomy-And-Physiology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The depolaristion phase for for the heart muscle cell are the consequences of transmembrane sodium flow is False.

Depolaristion of heart SAN,AVN and Purkinje fibers is due to transmembrane Ca+2 outflow.

Sodium is for ventricle and atrial contractile muscle fibers.But Heart muscle fibers contain nodal fibers, they need Ca+2 for depolarization.calcium ions are main for the depolarization.

In the given sentence

It is true for nerve and skeletal muscle,but it is false for Heart muscle.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In each part below, give a formal proof that the sentence given is valid or else...
In each part below, give a formal proof that the sentence given is valid or else provided an interpretation in which the sentence is false. (a) [∀xA(x) ∨ ∀xB(x)] → ∀x[A(x) ∨ B(x)]. (b) [∃xA(x) ∧ ∃xB(x)] → ∃x[A(x) ∧ B(x)].
At resting potential, the equilibrium voltage is maintained in part by chloride ions and other anions...
At resting potential, the equilibrium voltage is maintained in part by chloride ions and other anions inside the cell and by the action of the _____ - ______ pump. Because of the action of the pump, there is a higher concentration of _________ions inside the cell and a higher concentration of ___________ions outside the cell. A small depolarization of the cell results in rapid opening of voltage-gated _______ channels while the voltage-gated __________channels stay closed. ________ flows into the axon,...
Please select the best option for each part. Part A. The absolute refractory period of the...
Please select the best option for each part. Part A. The absolute refractory period of the action potential____________. (assume Temp = 37 degrees Celcius) a. determines the maximum frequency at which action potentials can be generated b. occurs because voltage-gated K+ channels have not recovered from inactivation c. does not occur in skeletal muscles d. occurs at the end of the afterhyperpolarization phase Part B. Two major components of an ion channel selectivity filter are _______ and _______. (assume Temp...
11. Assume that pre-synaptic neuron X is now repetitively stimulated very rapidly, what changes would you...
11. Assume that pre-synaptic neuron X is now repetitively stimulated very rapidly, what changes would you expect to occur in the post-synaptic membrane? a. Temporal summation of the post-synaptic potentials b. Spatial summation of the post-synaptic potential c. The membrane potential changes in the post-synaptic membrane will cancel each other out because the post-synaptic membrane is refractory form the first post-synaptic potential 12. The amount of time between action potentials is determined by: a. The all-or-none properties of the graded...
Answer questions 1-5 with a simple explanation. Jim has been lacking sleep lately and often has...
Answer questions 1-5 with a simple explanation. Jim has been lacking sleep lately and often has hard time trying to sleep as well. His doctor believes that jim was lacking hormones that regulates his cardiac rhythm. What part of the brain is likely damaged? Amygdala Pineal gland Thalamus Pons What part of a neuron is responsible for receiving signals from other neurons? Node of Ranvier Axon Terminal boutons Cell body The area responsible for storage and processing of memory regulates...
Part A Which acid is the best choice to create a buffer with pH= 3.16? (Answer...
Part A Which acid is the best choice to create a buffer with pH= 3.16? (Answer was nitrous acid (HNO2), pKa=3.34, I think it's needed for the next part) Part B If you have 500 mL of a 0.10 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base do you need to make the buffer with a pH of 3.16 (assuming no change in volume)?
Part of this prevous answer was wrong, you cannot have 2 theoritical yields. Thank you for...
Part of this prevous answer was wrong, you cannot have 2 theoritical yields. Thank you for taking time to review this. Please answer the questions below with this information. Please indicate 1, 2, or 3 next to your answer. Please put on this site, not a picture of the answer written on paper, sometimes it is difficult to read. Plastic cup A Mass of cup, water, and stirrer: 57.02g Mass of sodium bicarbonate: 1.05g Mass of citric acid: 0.77g Total...
QUESTION 10 Which of the following proteins are active during anaerobic fermentation? myokinase protease acetylcholinesterase phosphatse...
QUESTION 10 Which of the following proteins are active during anaerobic fermentation? myokinase protease acetylcholinesterase phosphatse 2 points    QUESTION 11 _____________ has the greatest influence on resting membrane potential. Sodium Chloride Magnesium Potassium 2 points    QUESTION 12 Ribosomes are in the ___________________. soma axon hillock dendrite axon 2 points    QUESTION 13 A mixed nerve has only efferent neurons. True False 2 points    QUESTION 14 Myoglobin is a protein that binds oxygen. True False 2 points   ...
PART A) Which statement is false? A) Amphipathic molecules may form micelles rather than bilayers, depending...
PART A) Which statement is false? A) Amphipathic molecules may form micelles rather than bilayers, depending on their structures.   B) All biological membranes contain lipids. C) Biological membranes typically contain proteins. D) All biological membranes have the same composition. PART B) Which statement is true? A) Once a membrane is synthesized, the lipid composition of each monolayer does not change. B)Hydropathy analysis provides a measure of H-bonding within the transmembrane portion of a membrane-spanning protein. C)Proteins may be embedded in,...
This multi part question needs only brief 1-2 sentence descriptions as answers, so I tried not...
This multi part question needs only brief 1-2 sentence descriptions as answers, so I tried not to split them up for the sake of continuity. Thank you in advance for asnwers this question! a) When one looks at the Milky Way at near-infrared wavelengths (∼2μm), what is a typical temperature of the objects at which one is looking? Thus, what are the (very general) kind of objects that you see when you look in these wavelengths? Besides the temperature of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT