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WorksheetsBIOL 3103 Test 2 review
Total questions: 32
Worksheet time: 16mins
What do all olfactory receptor cells have?
cilia
G-protein coupled receptors
dissolved odorants that bind to a receptor and initiate an action potential.
none of these
all of these
Of the following, which does NOT help regulate the release of Ca2+?
Calsequstrin
Ryanodine
Sarcolemma
All of these help regulate Ca2+ release
Which sense does NOT proceed through the thalamus?
Olfaction
Gustatory
Auditory
Both A and B
True or False: Hair cells are only apart of the auditory system.
True
False
An increase in the delivery of oxygen (not binding) to tissue cells is increased by:
higher (less acidic) pH
increased CO2 production
no oxygens being bound to hemoglobin
non of the above
How does the pleural cavity affect the lungs?
it helps the lungs remain elastic
it prevents them from collapsing by using negative pressure
It helps the lungs fill by using positive pressure
Which of the following is a function of the respiratory system?
Regulation of blood pH
Production of red blood cells
Digestion of food
All of the above
True or False: The thalamus is involved in the processing of all sensory information.
True
False
If you only had parasympathetic control of cardiac output, you would no longer have control over:
heart rate and stroke volume
heart rate
stroke volume
you would still have control over both
If you increase the amount of extracellular K+ on the apical side of the auditory hair cells, what would the effect on hair cell function be?
Decrease the likelihood of action potentials
increase the likelihood of action potentials
no effect
it depends on where the hair cells are concentrated.
Which of the following structures is primarily responsible for the sense of balance?
Cochlea
Semicircular canals
Olfactory bulb
Thalamus
Which of the following is NOT an adaptation for super fast muscles?
larger sarcoplasmic reticulum
increase in number or mitochondria
increase in myoglobin content
none of the above
What is the primary role of hemoglobin in the blood?
Transporting oxygen
Clotting blood
Fighting infections
Regulating blood pressure
Which of the following ions is crucial for muscle contraction?
Sodium (Na+)
Calcium (Ca2+)
Potassium (K+)
Chloride (Cl-)
During some type of muscle contraction, which of the following does not change from an inactive to an active state?
Myosin light chain kinase (MLCK)
Myosin
Actin
Which type of muscle is the least elastic
smooth
cardiac
skeletal
True or False: when 0 oxygens are bound to a hemoglobin, its binding affinity is the highest.
True
False
If the t-type Ca2+ channels in the heart opened earlier/faster than usual, which of the following would occur?
heart rate would increase
contractile force would increase
both of these
neither or these
What effect does an increase in intracellular calcium have on muscle contraction?
Decreases contraction strength
Increases contraction strength
No effect on contraction
Causes muscle relaxation
What would happen to the heart rate if the L-type Ca2+ channels in the heart were blocked?
Heart rate would increase
Heart rate would decrease
No change in heart rate
Heart rate would become irregular
What is the role of the sarcoplasmic reticulum in muscle cells?
Storing calcium ions
Producing ATP
Generating action potentials
Breaking down glucose
Which of the following senses is primarily processed in the occipital lobe?
Vision
Hearing
Taste
Smell
Which of these animals has only deoxygenated blood in its heart?
FIsh
Frog
Alligator
None of the above
Blood that is more alkaline (basic) than normal will result in
lowering the breathing rate
raising the breathing rate
increased CO2 in the blood
none of the above
Which of the following is chloride used for in gas exchange?
acts as a catalyst for oxygen binding
transporting HCO3 in and out of red blood cells
altering the pH of blood
Which of the following is NOT a function of hemoglobin?
Transporting oxygen
Transporting carbon dioxide
Regulating blood pressure
Acting as a buffer
What would be the effect on muscle contraction if the sarcoplasmic reticulum failed to release calcium ions?
Muscle contraction would increase
Muscle contraction would decrease
No effect on muscle contraction
Muscle contraction would become irregular
Which of the following is primarily responsible for detecting changes in blood pH?
Baroreceptors
Osmoreceptors
Chemoreceptors
Thermoreceptors
True or False: The cochlea is involved in the processing of balance information.
True
False
What is the primary function of the myelin sheath in the nervous system?
To protect neurons from damage
To increase the speed of nerve impulse transmission
To store neurotransmitters
To provide nutrients to neurons
True or False: Complete repolarization in cardiac action potentials occurs due to the K+ channels open and Ca2+ channels closings.
true
false
What ion is primarily responsible for the depolarization phase in pacemaker cells?
sodium
potassium
chloride
calcium
