e. 'Transmits electrical messages. neLb. Determine whether each of the following characteris-tics is unique to a mature red blood cell (RBC), uniqueto a cardiac muscle fiber (muscle fiber), or common toboth cell types (both). fli m laa Is packed with proteins RBC, Cad.msche tioRBCb. Is anucleatec. Is surrounded by a cell membraned. Is packed with mitochondriae. Transports oxygenPhysioEx Exercise 1Cell Transport Mechanismş

A muscle cell or myocyte are specialised cells. There are three types of muscle cells present in the…

Answered: e. Transmits electrical messages.…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

Heart failure occurs when a. the cardiac output is 15 liters per minute when you are watching television b. the cardiac output is 5 liters per minute when you are running as fast as you can on the treadmill. c. the cardiac outout does not change based on the energy expenditure d. all of the above
Which of the following is a predicted outcome in a mammal heart that entirely lacks valves? A. Oxygenated and spent (deoxygenated) blood would mix. B. Cardiac output would be lower than that in a normal heart with valves. C. Heart rate would be lower compared with that in a normal heart with valves. D. A-V delay would be longer compared with that in a normal heart with valves. E. The pathways for blood flow to the body and the lungs would be reversed.
cardiac output depend on what two factor a. stroke volume and stroke power b. cardiac rate and cardiac rhythm c. cardiac rate and stroke volume d. blood density and blood volume 2. which is the following is not matched correctly a. musclar ( distributing artieres - mainly made up of smooth muscle ( found in tunica medial ) b. vasa vasorum : small blood vessles that helps in nourishing particularly large arteries and veins c. arterioles - relatively large and thick vessels that controls the flow of blood leaving the heart d. elastic (conducting ) arteries - well supplied with elastin to maintain pressure ) has all 3 tunica
Caffeine lowers the heart rate by increasing rates of depolarization at the SA node True False Nicotine raises the heart rate because it stimulates the activity of the sympathetic neurons in medulla oblongata True False The Frank-Starling Law of the Heart states that the force of heart contraction is directly proportional to the initial length of the muscle fiber, within optimal limits of length True False If the sarcomeres stretched beyond the optimal length, the force of contraction would go down, but that can potentially happen only during open heart surgery when the heart is not constrained by the pericardium, lungs, ribs and diaphragm. True False It is the Na+ channel-driven spontaneous depolarization that is affected by sympathetic and parasympathetic inputs to speed up or slow down the firing rate of the SA node and other conductive cells. True False
In the vertebrate circulatory system, the large arteries (i.e. the aorta and arteries collectively)... A. are the site of highest blood vessel total cross-sectional area B. have the highest total blood flow C. are the site of exchange between the blood and the tissues D. have the highest blood pressure E. All of the above
During ischemia in cardiac muscle: O A. Extracellular sodium accumulates. O B. Extracellular potassium accumulates. C. Lactic acid increases. O D. B andC occur. O E. All occur.
The amount of force that the ventricles produce in a contraction can be increased through ____. A stimulating more motor neurons so that more of the muscle cells contract B reducing the stroke volume and increasing the end systolic volume C parasympathetic stimulation of the ventricular muscle cells D increasing the amount of Ca+2 in their intracellular fluid during contraction
Where would the adhesion of platelets to endothelial cells in non-damaged blood vessels be the greatest problem? O In your heart and brain O None of these is correct O. In your bones O In your skin O In your legs and toes

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