Matrix composed almost entirely of extracellular collagen fibers. It is able to withstand great pulling forces. Which of the tissue is described? A. Adipose. B.Cartilage. C.Bone. D. Dense connective tissue. E.Loose connective tissue 2. According to Frank-Starling law of the heart, A.increased preload causes increased cardiac output. B.increased afterload causes increased cardiac output. C.decreased preload causes increased afterload. D.afterload influences cardiac output more than preload. E.cardiac output is not influenced by preload.

Matrix composed almost entirely of extracellular collagen fibers. It is able to withstand great pulling forces. Which of the tissue is described? A. Adipose. B.Cartilage. C.Bone. D. Dense connective tissue. E.Loose connective tissue 2. According to Frank-Starling law of the heart, A.increased preload causes increased cardiac output. B.increased afterload causes increased cardiac output. C.decreased preload causes increased afterload. D.afterload influences cardiac output more than preload. E.cardiac output is not influenced by preload.

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter6: The Muscular System

Section: Chapter Questions

Problem 3CT

See similar textbooks

Similar questions

Heart muscle cells ______. A will not contract unless acetylcholine is released at a neuromuscular junction B use glucose as their primary energy source and are easily damaged by hypoglycemia C have gap junctions that allow action potentials to be transmitted from one cell to the next D "are very long, with individual cells running the entire length of the heart"
Increased action potentials from the sympathetic nervous system would cause which of the following? a. release of acetylcholine at sinuatrial nodal cells b. release of acetylcholine at cardiac muscle cells c. increased strength of contraction d. decreased heart rate
What do mural cells do? a. Provide the endothelial tubes with structural stability and ability to resist pressures of blood. b. Keep cells together to prevent leakage c. Recruit cancer cells d. Activate the angiogenesis pathway
Referring to the figure shown, the movement of glucose is from the lumen of the duodenum through an interstitial cell, out to the extracellular fluid, and into a capillary. What would happen if the action of the Na+–K+ pumps was reduced? A)The rate of flow of glucose into the interstitial cells would be increased. B)The direction of flow of glucose would be reversed. C)The rate of flow of glucose into the interstitial cells would be reduced. D)Nothing would differ: the movement of glucose would be the same as before the reversal.
Activation of PKC in the direct perforant pathway leads to which effect? a. insertion of new AMPA receptors b. enhanced neurotransmitter release c. increased L-type calcium channel currents d. decreased potassium channel current
Which of the following would NOT result from an increase in sympathetic stimulation of the heart? A increased force of ventricular contraction B increased calcium concentration in the fluid surrounding the actin and myosin during contraction C increased heart rate D increased number of motor units activated E increased cardiac output
Cardiomyocytes are similar to skeletal muscle because: a. they beat involuntarily b. they are used for weight lifting c. they pulse rhythmically d. they are striated
suppose a poison were able to block the gap junctions in the intercalated discs of cardiac muscle cells. how would this affect the ability of cardiac muscle tissue to perform its functions?
Explain the concept of tetany in skeletal muscle. Can cardiac muscle be tetanized? Explain the physiological significance of your answer.
a. What changes in the Pulse Rate and Blood Pressure will you notice as a person exercises? Make a concept map regarding the explanation behind the changes in the PR and BP as a person exerted physical activity. b.What changes in the Pulse Rate and Blood Pressure will you notice before and after eating? What's the possible explanation behind such changes? c. What changes in the Pulse Rate and Blood Pressure will you notice from reclining to standing position? Explain the possible explanation as the subject changed his body position from reclining to sitting and then to a standing position.
Compared with the interstitial fluid that bathes active muscle cells, blood reaching these cells in arteries has a(A) lower osmotic pressure.(B) higher PO2.(C) lower pH.(D) higher PCO2.(E) greater bicarbonate concentration.
Which of the following best describes the mechanism of action of a cardiac glycoside? A) Strengthens ventricular contraction B) Inhibits sodium production C) Vasoconstriction D) Inhibits cholesterol formation