The fibrous skeleton of the heart serves as electrical insulation between the atria and the ventricles.
Indicate whether the statement is true or false
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Question 2) The fuzzy coat of carbohydrates on the outer surface of the plasma membrane that functions in cell identification is called the ________.
A) brush border
B) cell-adhesion molecule
C) glycocalyx
D) phospholipid bilayer
E) cholesterol coat
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Question 3) Which fibers are primarily responsible for producing lactic acid?
A) Type I slow-twitch fibers
B) Type I slow oxidative fibers
C) Type IIB fast glycolytic fibers
D) Red fibers
E) Type IIA intermediate glycolytic fibers
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Question 4) Twins produced when a single egg is fertilized are called ________ twins. Twins produced from two eggs ovulated at the same time are called ________ twins.
A) monozygotic; identical
B) dizygotic; monozygotic
C) dizygotic; nonidentical
D) nonidentical; identical
E) monozygotic; dizygotic
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Question 5) Which of these processes is essential for all of the rest to happen?
A) Glycolysis
B) Lactic acid reduction
C) Anaerobic fermentation
D) Electron transport chain
E) Citric acid cycle
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Question 6) Shortening a muscle while it maintains constant tension is called ________.
A) incomplete tetanus
B) an isometric contraction
C) complete tetanus
D) an isotonic contraction
E) an isokinetic contraction
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Question 7) Erythrocytes do not carry out aerobic respiration; thus, they do not consume any of the oxygen they are transporting.
Indicate whether the statement is true or false
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Question 8) Red bone marrow does not contain ________.
A) red blood cells
B) hemopoietic tissue
C) white blood cells
D) myeloid tissue
E) yellow bone marrow
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Question 9) In the glycocalyx, ________ act like identification tags that enable the body to distinguish its own cells from foreign and diseased cells.
A) cholesterol molecules
B) glycoproteins
C) phospholipids
D) cell-adhesion molecules
E) lipoproteins
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Question 10) Which cranial nerve innervates most of the viscera in the thoracic and abdominopelvic cavities?
A) Trochlear nerve (IV)
B) Abducens nerve (VI)
C) Vagus nerve (X)
D) Accessory nerve (XI)
E) Hypoglossal nerve (XII)
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