Which of the following are harmful or disease-causing microorganisms from which nonspecific defenses protect the body?
A) macrophages
B) antibodies
C) pathogens
D) allergens
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Question 2) What membrane divides the outer ear from the middle ear?
A) tympanic membrane (ear drum)
B) auricle (pinna)
C) vestibule
D) cochlea
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Question 3) Peyer's patches and the tonsils are part of the collection of small lymphoid tissues that protect the upper respiratory and digestive tracts from infection and are referred to as ________.
A) lymph nodes
B) MALT or mucosa-associated lymphatic tissue
C) germinal centers
D) lymphatics
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Question 4) What structure is lined with ceruminous glands?
A) pharyngotympanic (auditory) tube
B) auricle (pinna)
C) external acoustic meatus (auditory canal)
D) tympanic membrane
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Question 5) The role of the ________ is to trap and remove bacteria or other foreign pathogens entering the throat.
A) thymus
B) spleen
C) tonsils
D) lymph node
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Question 6) What is the reflexive movement of both eyes medially to view objects close to us?
A) emmetropia
B) convergence
C) accommodation
D) inversion
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Question 7) Bacteria and tumor cells are removed from lymph by ________.
A) lymph nodes
B) tonsils
C) the spleen
D) thymus
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Question 8) The overlapping of the two visual fields that provides for depth perception (3-D vision) results in ________.
A) accommodation
B) convergence
C) binocular vision
D) refraction
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Question 9) All lymph flows in a one-way system toward the ________.
A) spleen
B) liver
C) heart
D) pancreas
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Question 10) Fibers from the medial side of each eye cross over to the opposite side of the brain at the ________.
A) convergence
B) optic radiation
C) optic tracts
D) optic chiasma
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