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Identify the type of information that travels along the structure labeled "2."
Figure 15-1 Spinothalamic Tracts
A) motor commands to skeletal muscles
B) proprioception to the cerebral cortex
C) fine touch to the cerebral cortex
D) pressure and touch sensations
E) visceral motor commands to smooth muscle
Identify the type of information that travels along the structure labeled "4."
Figure 15-2 The Corticospinal Pathway
A) motor commands to skeletal muscles
B) proprioception to the cerebral cortex
C) fine touch to the cerebral cortex
D) pain and crude touch sensations
E) visceral motor commands to smooth muscle
How many chromosomes do human gametes contain?
A) 12
B) 23
C) 46
D) 92
E) 6
Which structure organizes the mitotic spindle during cell division?
Figure 3-1 The Anatomy of a Representative Cell
A) 1
B) 2
C) 3
D) 5
E) 6
Which of the following organs is not part of the lower respiratory system?
A) pharynx
B) trachea
C) larynx
D) bronchi
E) alveoli
The openings to the nasal cavity are the
A) external nares.
B) internal nares.
C) nasal meatuses.
D) nasal conchae.
E) nasal sinuses.
Figure 3-2 The Plasma membrane
Which structure has a "gate" to control transport?
A) 1
B) 2
C) 4
D) 7
E) 8
The sense of taste is also known as
A) expiation.
B) maculation.
C) gustation.
D) olfaction.
E) sublation.
What is the role of NADH in metabolism?
A) convert pyruvic acid into acetyl-coA
B) produce bicarbonate ions for a pH buffer
C) transport hydrogen atoms to coenzymes
D) produce carbon dioxide
E) phosphorylate ADP into ATP
Figure 20-2 Cardiac Cycle
What occurs at the circled label "5" on the graph?
A) peak systolic pressure
B) isovolumetric systole
C) isovolumetric contraction
D) ventricular refilling
E) increased heart rate
Identify the mismatched pair.
A) receptor proteins - bind with enzymes
B) channel proteins - provide passageway for ions
C) recognition proteins - identify self
D) carrier proteins - provide transport
E) enzymes - speed up chemical reactions
Hypercapnia refers to elevated levels of
A) oxygen.
B) hemoglobin.
C) carbon monoxide.
D) sodium.
E) carbon dioxide.
The formation of different types of cells required in development, or ________, occurs
through selective changes in genetic activity.
A) differentiation
B) cupellation
C) deployment
D) gametogenesis
E) phylogeny
Which of the following are found in the structure labeled "3"?
Figure 10-1 Skeletal Muscle Fiber
A) actin
B) myosin
C) titin
D) tropomyosin
E) All of the answers are correct.
In the process of ________ a phosphate group is transferred to a molecule.
A) ionization
B) buffering
C) amination
D) dissociation
E) phosphorylation
Which of the following glands have a compound rather than a simple structure?
A) salivary glands
B) sebaceous glands
C) mucous glands
D) sweat glands
E) gastric glands
Stretch marks occur when
A) the skin is stretched in normal movements.
B) surgical incisions are made perpendicular to the skin's lines of cleavage.
C) the skin is so extensively stretched that its elastic limits are exceeded.
D) athletes overextend a muscle.
E) individual epidermal layers separate.
