PHYSIO 261 Lecture Final Review Latest Update
2025-2026 Exam 100 Questions with 100%
Verified Correct Answers Guaranteed A+
________ is composed of multiple globular molecules polymerized to form long chains
or filaments.
A) Actin
B) Tropomyosin
C) Troponin
D) Myosin - CORRECT ANSWER: A) Actin
.________ is the backup energy molecule that can be rapidly converted to ATP in active
skeletal muscle.
A) protein
B) glucose
C) phosphocreatine
D) fatty acid - CORRECT ANSWER: C) phosphocreatine
A denatured protein has lost its shape, function and hydrogen bonds. T/F - CORRECT
ANSWER: True
A triglyceride molecule is made up of
A) one fatty acid and three glycerols
B) one glycerol and three fatty acids
C) two fatty acids and two glycerols
D) one glycerol and two fatty acids - CORRECT ANSWER: B) one glycerol and three
fatty acids
ACE converts angiotensin I to angiotensin II. T/F - CORRECT ANSWER: True
,Acromegaly is caused by excess Growth hormone production in adulthood. T/F -
CORRECT ANSWER: True
Action Potential
A) is always one way
B) can be summed
C) neither of the answers are correct - CORRECT ANSWER: A) is always one way
After a hormone has exerted its effects, it typically
A) continues to act until an opposing hormone is secreted
B) is inactivated or removed from the blood
C) spontaneously degrades - CORRECT ANSWER: B) is inactivated or removed from
the blood
Anterograde and retrograde axonal transport are forms of ________ transport
A) fast
B) slow
C) none of the answers is correct - CORRECT ANSWER: A) fast
As ATP binds to the myosin head at the beginning of a muscle contraction cycle, the
myosin head immediately
A) tightens its bond to actin.
B) detaches from actin.
C) initiates binding with actin. - CORRECT ANSWER: B) detaches from actin
As blood vessel length increases
A) flow decreases only.
B) friction decreases only.
, C) resistance increases and flow decreases.
D) resistance increases only. - CORRECT ANSWER: C) resistance increases and flow
decreases.
Bile is
A) produced by hepatocytes only.
B) released into the stomach only.
C) produced by hepatocytes and the gallbladder
D) produced by the gallbladder only - CORRECT ANSWER: A) produced by
hepatocytes only.
Chief cells secrete
A) mucus
B) gastrin
C) pepsinogen.
D) hydrochloric acid - CORRECT ANSWER: C) pepsinogen.
Compared to skeletal muscle, contraction of smooth muscle cells
A) only sustained without fatigue
B) a slower response to a stimulus and sustained without fatigue
C) only a slower response to a stimulus
D) only controlled by the somatic nervous system - CORRECT ANSWER: B) a slower
response to a stimulus and sustained without fatigue
Cysts on the kidney can press upon nephrons, raising the pressure inside the nephrons.
How will this affect glomerular filtration rate and blood pressure?
A) GFR increases and blood pressure increases
B) GFR increases and blood pressure decreases
C) GFR decreases and blood pressure decreases
2025-2026 Exam 100 Questions with 100%
Verified Correct Answers Guaranteed A+
________ is composed of multiple globular molecules polymerized to form long chains
or filaments.
A) Actin
B) Tropomyosin
C) Troponin
D) Myosin - CORRECT ANSWER: A) Actin
.________ is the backup energy molecule that can be rapidly converted to ATP in active
skeletal muscle.
A) protein
B) glucose
C) phosphocreatine
D) fatty acid - CORRECT ANSWER: C) phosphocreatine
A denatured protein has lost its shape, function and hydrogen bonds. T/F - CORRECT
ANSWER: True
A triglyceride molecule is made up of
A) one fatty acid and three glycerols
B) one glycerol and three fatty acids
C) two fatty acids and two glycerols
D) one glycerol and two fatty acids - CORRECT ANSWER: B) one glycerol and three
fatty acids
ACE converts angiotensin I to angiotensin II. T/F - CORRECT ANSWER: True
,Acromegaly is caused by excess Growth hormone production in adulthood. T/F -
CORRECT ANSWER: True
Action Potential
A) is always one way
B) can be summed
C) neither of the answers are correct - CORRECT ANSWER: A) is always one way
After a hormone has exerted its effects, it typically
A) continues to act until an opposing hormone is secreted
B) is inactivated or removed from the blood
C) spontaneously degrades - CORRECT ANSWER: B) is inactivated or removed from
the blood
Anterograde and retrograde axonal transport are forms of ________ transport
A) fast
B) slow
C) none of the answers is correct - CORRECT ANSWER: A) fast
As ATP binds to the myosin head at the beginning of a muscle contraction cycle, the
myosin head immediately
A) tightens its bond to actin.
B) detaches from actin.
C) initiates binding with actin. - CORRECT ANSWER: B) detaches from actin
As blood vessel length increases
A) flow decreases only.
B) friction decreases only.
, C) resistance increases and flow decreases.
D) resistance increases only. - CORRECT ANSWER: C) resistance increases and flow
decreases.
Bile is
A) produced by hepatocytes only.
B) released into the stomach only.
C) produced by hepatocytes and the gallbladder
D) produced by the gallbladder only - CORRECT ANSWER: A) produced by
hepatocytes only.
Chief cells secrete
A) mucus
B) gastrin
C) pepsinogen.
D) hydrochloric acid - CORRECT ANSWER: C) pepsinogen.
Compared to skeletal muscle, contraction of smooth muscle cells
A) only sustained without fatigue
B) a slower response to a stimulus and sustained without fatigue
C) only a slower response to a stimulus
D) only controlled by the somatic nervous system - CORRECT ANSWER: B) a slower
response to a stimulus and sustained without fatigue
Cysts on the kidney can press upon nephrons, raising the pressure inside the nephrons.
How will this affect glomerular filtration rate and blood pressure?
A) GFR increases and blood pressure increases
B) GFR increases and blood pressure decreases
C) GFR decreases and blood pressure decreases
