Physio3
Thyroid & Hormone Physiology Quiz
Test your knowledge on the complex interactions of thyroid hormones, growth hormones, and their effects on metabolism and physiological fun
- 54 questions on thyroid and hormone physiology
- Multiple-choice format for easy navigation
- Designed for students, educators, and professionals alike
56.The permissive effect of thyroxine toward catecholamine achieves through what mechanism?
A. Increased production of B receptors
B. Increased production of calcium channels
C. Increased production of ATP
D. Increased production of Na' K' pumps
57. What is the receptor of thyroxine?
A. Enzyme
B. Intracellular
C. Ionotropic
D. Metabotropic
58.What is the mechanism of permissive effect of thyroxine toward catecholamine?
A. Activate DNA to synthesis B receptors
B. Opening calcium channels increasing contractility
C. Closing potassium channels to depolarize
D. Activate degrading enzymes to preserve CAMP
59.What enzyme converts T4 to T3 ?
A. Deiodinase
B. Kinase
C. Oxidase
D. Peroxidase
60.What thyroid hormone is effective?
A. Free reverse T3
B. Free T3
C. Free T4
D. T3 binding to globulin
61. What is the metabolism effect of thyroxine?
A. Breakdown of Protein
D. Lipogenesis
E. Lipolysis
C. Ketogenesis
62.What is the metabolism effect of thyroxine?
A. Breakdown of Protein
C. Ketogenesis
D. Lipogenesis
E. Protein synthesis
63.Thyroxine enhances secretion of what hormones for bone growth?
A. Growth hormone
B. IGF-1
D. Epinephrine
E. Growth hormone and IGF-1
64.What are the roles of thyroid hormone in development of nervous system?
A. Dendrite growth and increased neurotransmitters
B. Myelin production and increased gap junction synaptic
C. Myelin production and increased neurotransmitters
D. Synapse formation and increased neurotransmitters
65.What factors produced by the liver under the stimulation of Growth hormone?
A. Platelet growth factor
B. Insulin like growth factor 1
C. Glucagon like peptide
D. Transforming growth factor
66.What is the role of growth hormone in lipid metabolism?
A. Cholesterol formation
B. Ketogenesis
D. Lipolysis
E. Steroid formation
67. What amino acids are used to produce catecholamines?
C. Leucine
D. Tyrosine
E. Valine
B. Glutamine
68.What is the effect of epinephrine during stress on skeletal muscle arteriole?
A. Activates ßi to produce vasodilation
B. Activates B2 to produce vasodilation
D. Activates a2 to produce vasodilation
E. Inhibits a1 to produce vasodilation
69. What is the effect of epinephrine during stress on peripheral arterioles?
A. Activates al to produce vasoconstriction
A. Activates al to produce vasoconstriction
C. Activates a2 to produce vasoconstriction
D. Activates B1 to produce vasoconstriction
70.What is the mechanism of thyroid hormones on the basal metabolism?
A. Increased production of Na* K* pump and ATP
C. Increased production of B receptors
D. Increased production of myelin
E. Increased production of glucose
1. What is the likely diagnosis?
A. Cushing syndrome
C. Acromegaly
D. Gigantism
B. Grave's disease
A 34 y/o woman visited her family physician for his easy to be irritable and palpitation. She is also intolerant to heat and progressively lost weight. Physical examinations reveal BP 142/80 mm Hg, HR 118/min, T° 38.2°C, RR 16. 5. What is the likely diagnosis?
A. Cushing syndrome
B. Grave's disease
C. Acromegaly
D. Gigantism
6. What clinical findings you miss to look for?
B. Enlarged hands and head
A. Enlarged neck and big eyes
C. Moon face and buffalo back
D. Hirsutism and enlarged clitoris
7. What is the lab finding would you expect?
A. T3 ↓ TSH ↑
B. T3↑ TSH ↓
C. Cortisol ↑ ACTH ↓
D. Cortisol ↓ ACTH ↑
8. Explain why she is palpitated?
A. Increased release of Norepinephrine
B. Increased expressing Beta receptors
C. Increased expressing Alpha receptors
D. Increased production of heat
9. What antibody do you expect to find in the serum?
A. AB anti-peroxidase
B. AB TSH like
C. AB anti T3
D. AB Epinephrine like
10. Why is she intolerant to heat?
A. Increases production of basal metabolism
B. Increases production of B receptors
c. Increases production of a receptors
D. Increases production of glucose
1.Which one is the component of the central nervous system?
A. Brain a. Brain stem a. Spinal e. Spinal nerve
B. spinal Nerve d. Sympathetic nerve e. Parasympathetic nerve c. Spinal cord
7. Which one is the component of the peripheral nervous system?
A. Brain
C. Spinal cord
D. Cerebellar
E. Parasympathetic nerve
8. Which one is a somatic nervous system?
A. Motor neuron
B. Interneuron
C. Enteric
D. Sympathetic
9. Which one is a somatic nervous system?
A. Somatic sense
B. Interneuron
C. Enteric
D. Sympathetic
10. Which one plays a role in integration?
A. Brain
B. Spinal nerve
D. Sympathetic nerve
11. Which one plays a role in integration?
A. Spinal cord
B. Spinal nerve
C. Cranial nerve
D. Sympathetic nerve
12. Which is excitatory post synaptic potential (EPSP)?
A. Resting membrane potential
B. Overshot potential
C. Undershot potential
D. Potential less negative than membrane potential
13. Which is inhibitory post synaptic potential (IPSP)? s?
A. Resting membrane potential
B. Overshot potential
C. Undershot potential
E. Potential more negative than membrane potential
14. Explain spatial summation?
A. Summation of post synaptic potential at different sites at the same time
B. Summation both spatial and temporal
C. Summation of post synaptic potentials at the same site but different times
E. Addition of post potentials negatives
15. Explain temporal summation
A. Summation of post synaptic at different site at the same time
B. Summation of spatial and temporal
C. Summation of post synaptic at same site at the different time
D. Addition of post potential positive
16. Explain spatial and temporal summation
A. Summation of post synaptic at different site at the same time
B. Summation of spatial and temporal
C. Summation of post synaptic at same site at the different time
D. Addition of post potential positive
17. What kind of potential is generated at axon hillock?
A. Excitation post synatic potential
B. Inhibitory post synaptic potential
C. Action potential
D. Spatial summation of post synaptic potential
18. Concerning nerve conduction along axon, What is active current?
A. Movement of Na+ion through its channel
B. Movement of K+ion through its channel
C. Movement of Ca++ion through its channel
D. Shuttling of positive charges along a neural process
19. Concerning nerve conduction along axon, What is passive current?
A. Movement of Na+ion through its channel
E. Shuttling of negative charges along a neural process
D. Shuttling of positive charges along a neural process
C. Movement of Ca++ion through its channel
20. Action potential along axon is generated by what kind of channel?
A. Voltage gated sodium channel
B. Voltage gated potassium channel
C. Voltage gated calcium channel
D. Ligand gated sodium channel
21. Passive current along a neutral process is shuttled by what mechanism?
A. Opening of voltage gated sodium channel
B. Opening of voltage gated potassium channel
C. Opening of voltage gated calcium channel
D. Opening of ligand gated sodium channel
22. Along axon active current is regenerated what mechanism?
A. Shuttling of positive charges along a neural process
B. Shuttling of negative charges along a neural process
C. Spatial summation of postsynaptic potentials
D. Spatial summation of presynaptic potentials
E. Temporal summation of postsynaptic potentials
23. Along axon action potential is regenerated what mechanism?
A. Shuttling of positive charges along a neural process
B. Shuttling of negative charges along a neural process
C. Spatial summation of postsynaptic potentials
D. Spatial summation of presynaptic potentials
24. What prevents the leak of passive current which flows from Node to Node (of Ranvier)?
A. Axon diameter
B. Node of Ranvier is narrow
D. Cell membrane of axon
C. Thickness of myelin sheath
25. What makes the travelling of the passive current fast?
A. Axon diameter
B. Node of Ranvier is narrow
C. Thickness of myelin sheath
D. Cell membrane of axon
26. What is saltatory current?
A. Continuous current from channel to channel
B. Current jumps from node to node
C. Current jumps from Hillock to terminal bouton
D. Current flows slowly
27. What is the role of action potential in the terminal bouton?
A. Opening of voltage gated sodium channel
B. Opening of voltage gated calcium channel
C. Opening of voltage gated potassium channel
D. Opening of voltage gated chloride channel
28. What ion releases neurotransmitters into the synaptic cleft?
A. Sodium
B. Calcium
C. Potassium
D. Chloride
30. What kind of receptor that neurotransmitter use to directly open ion channels?
A. Metabotropic
C. Intracellular
D. Ionotropic
E. Soluble enzyme
31. What kind of receptor that neurotransmitter use to open ion channels via second messenger
A. Metabotropic
B. Enzyme
D. Ionotropic
E. Soluble enzyme
35. Which cells secrete aqueous humor?
A. Ciliary epithelia
B. Ciliary body
D. Iris
E. Lens
36. Which one of the following is used to drain aqueous humor to venous system?
A. Ciliary epithelium
B. Anterior Chamber
D. Canal of Schlemm
E. Lens
37. What is the role of dark on photoreceptors?
A. Keep the Guanyl Cyclase active
B. Inactivate Guanyl Cyclase active
C. Keep the Adenyl Cyclase active
D. Inactive Guanyl Cyclase
38. Which photopigment plays a role as photosensor?
A. Rhodopsin
B. Arrestin
C. Transducin
39. What is the effect of cGMP in photoreceptor?
A. Maintain the cation channel opened
B. Maintain the anion channel opened
C. Close the cation channel
D. Close the anion channel
40. Define dark current of the photoreceptor
A. Sodium current
B. Potassium current
D. Chloride current
E. Magnesium current
41. What is the rofe of dark current?
A. Releases glutamate
B. Releases dopamine
D. Releases serotonin
E. Releases glycine
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