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Study Guide Unit 1 NU 545 Questions and Answers
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Study Guide Unit 1 NU 545 Questions and Answers
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1 of 61Which of the following is true about alcohol (ethanol)?
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Is metabolized via the Is primarily metabolozed and
microsomal P-450. excreted by the kidneys.
Increases activation of methionine, Can produce hypermagnesemia
an essential amino acid. with chronic use.
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2 of 61
Term
Which type of cell adaptation occurs when normal columnar ciliated
epithelial cells of the bronchial lining have been replaced by
stratified squamous epithelial cells?
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muscle
neural
metaplasia
epithelia
connective
neoplasia hyperplasia
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3 of 61
Term
A nurse recalls depolarization occurs when the
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, voltage-required chanels the cell membrane becomes
open and Na+ enters the cell. impermeable to ions.
the cell increases its Water content the cell undergoes apoptosis Due
through osmosis. to cellular stress.
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4 of 61
Term
Define active transport
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Passive movement of molecules
Process of breaking down
across a membrane without energy
molecules to release energy in cells
input
Movement across cell
Movement of cells within an
membrane--from low to high
organism to reach a specific
concentration--requires
location
energy
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5 of 61
Term
, Do all cells continue to replicate and divide?
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People with FAS have central nervous system (CNS) problems, minor facial
features, and growth problems. People with FAS can have problems with
learning, memory, attention span, communication, vision, or hearing. They might
have a mix of these problems.
Physical defects may include:
Distinctive facial features, including small eyes, an exceptionally thin upper lip, a
short, upturned nose, and a smooth skin surface between the nose and upper lip
Deformities of joints, limbs and fingers
Slow physical growth before and after birth
Vision difficulties or hearing problems
Small head circumference and brain size
Heart defects and problems with kidneys and bones
Cell communication is the process by which a cell detects and responds to
signals in its environment. Cells communicate through their own language of
chemical signals. Different compounds, such as hormones and neurotransmitters,
act like words and phrases, telling a cell about the environment around it or
communicating messages.
Cellular swelling (or cloudy swelling) may occur due to cellular hypoxia, which
damages the sodium-potassium membrane pump; it is reversible when the cause
is eliminated. Cellular swelling is the first manifestation of almost all forms of
injury to cells.
Cells - except for cancerous ones - cannot reproduce forever. When aging
cells stop dividing, they become "senescent." Scientists believe one factor
that causes senescence is the length of a cell's telomeres, or protective
caps on the end of chromosomes. Every time chromosomes reproduce,
telomeres get shorter. As telomeres dwindle, cell division stops altogether.
Senescent cells do not function the way young cells do, and are believed
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