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Respiratory and Circulatory System Quiz

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Questions and Answers

How does an increase in pressure gradient affect flow rate?

It increases viscosity

It decreases flow rate

It has no effect on flow rate

It increases flow rate (correct)

What effect does vasoconstriction have on flow?

It increases flow

It decreases flow (correct)

It increases resistance

It has no effect on flow

How does the vessel radius affect resistance and flow?

Vessel radius has no effect on resistance and flow

A bigger radius increases viscosity

A bigger radius increases resistance and decreases flow

A bigger radius decreases resistance and increases flow (correct)

Which process drives absorption in capillary exchange?

Colloid osmotic pressure Signup and view all the answers

What regulates vessel constriction and dilation based on action potential frequency?

Sympathetic nervous system Signup and view all the answers

What is the primary function of the lymphatic system?

Draining excess tissue fluid Signup and view all the answers

Which of the following is the correct formula for calculating stroke volume?

SV = EDV - ESV Signup and view all the answers

What is the formula for calculating cardiac output?

Cardiac output = SV $\times$ HR Signup and view all the answers

Which of the following factors influences stroke volume?

Inotropic effects Signup and view all the answers

What is the relationship between velocity and flow rate in a tube?

They are directly related Signup and view all the answers

What is the main reason for the longer refractory period of cardiac cells compared to skeletal muscle cells?

Presence of plateau phase in cardiac cells Signup and view all the answers

What characterizes the action potential of a cardiac autorhythmic cell?

Pacemaker potential and repolarization without hyperpolarization Signup and view all the answers

What is the primary function of the pleural sac?

Prevents friction and maintains lung inflation Signup and view all the answers

Which cells in the alveolar sac are responsible for respiration?

Type 1 cells Signup and view all the answers

According to Dalton’s law, what does the sum of partial pressures in a container equal?

Total gas pressure Signup and view all the answers

Study Notes

Respiratory and Circulatory System Processes

Iron ingested from diet and absorbed by active transport
Transferrin protein transports iron in plasma to either liver for storage or bone marrow for hemoglobin formation
Hemostasis steps: vasoconstriction, platelet plug formation, clot formation
Primary functions of respiratory system: gas exchange, pH regulation, protection, vocalization
Pleural sac importance: double-layered membrane around lungs, prevents friction, maintains lung inflation
Alveolar sac cells: type 1 for respiration, type 2 secretes surfactant, alveolar macrophage for immunity
Respiratory membrane components: alveolar type 1 cell, basement membrane, pulmonary capillary endothelium
Pulmonary circulation pathway: right ventricle, pulmonary trunk, arteries, capillaries, venules, veins, left atrium
Mucociliary escalator: traps and removes pathogens, involving mucus, saline layer, and cilia
Dalton’s law: sum of partial pressures in a container equals total gas pressure
Boyle’s law in respiratory system: volume changes inversely affect pressure
Lung volumes and capacities definitions and calculations: TV, IRV, ERV, RV, IC, FRC, VC, TLC
Pressure changes in lungs during quiet breathing: intrapleural and alveolar pressure fluctuations, volume changes

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Description

Test your knowledge of the respiratory and circulatory system processes with this quiz. Explore topics such as iron absorption, hemostasis, pulmonary circulation, lung volumes, and pressure changes during breathing. Perfect for students and professionals in the medical field.