The lumen of capillaries is so small that red blood cells must travel through these blood vessels in single file or sometimes actually squeeze through

Indicate whether the statement is true or false


TRUE

Biology & Microbiology

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Koch's postulates were instrumental in establishing that Mycobacterium leprae is the cause of leprosy.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Altogether, the body secretes about 7 liters of water into the alimentary canal each day. About what percentage of this water gets reabsorbed?

A) 30% B) 50% C) 60% D) 90%

Biology & Microbiology

A tree grows wider each year because of ________. I) apical meristem II) vascular cambium III) cork cambium

A) I only B) II only C) II and III D) I, II, and III

Biology & Microbiology

Which of the following symptoms can help you recognize a person who is undergoing anaphylactic shock?

A. Immediate allergic response after a person is exposed to the allergen that can produce the following symptoms: drop in blood pressure, increased dilation of the capillaries, constriction of the bronchi and the inability to breathe. B. Immediate allergic response after a person is exposed to the allergen that can produce the following symptoms: drop in blood pressure, decreased dilation of the capillaries, constriction of the bronchi and the inability to breathe. C. Immediate allergic response after a person is exposed to the allergen that can produce the following symptoms: an increase in blood pressure, increased dilation of the capillaries, constriction of the bronchi and the inability to breathe. D. A gradual allergic response after a person is exposed to the allergen that can produce the following symptoms: drop in blood pressure, increased dilation of the capillaries, constriction of the bronchi and the inability to breathe. E. None of these are the symptoms of a person undergoing anaphylactic shock.

Biology & Microbiology