Physio lab quiz 7 practice

If a patient has a blood pressure of 120/80 mmHg, what is their MAP?

93.3 mmHg

Which of the following statements is false about the diaphragm?

All of the above are true

Which of the following statements is false about alveoli?

Alveoli store excess air to prevent lung collapse.

What is the main form in which carbon dioxide is transported in the blood?

As bicarbonate ions

Which formula is used to calculate blood pressure?

BP= Cardiac Output × Peripheral Resistance

Which of the following is false regarding the interaction between the pneumotaxic and apneustic centers?

Both centers work synergistically to promote expiration.

What is the primary muscle responsible for quiet inspiration?

Diaphragm

Which of the following is incorrectly matched?

Epiglottis - Prevents food from entering the nasal passages during swallowing

Which of the following hormones increases blood pressure by causing vasoconstriction?

Epinephrine

Cardiac output is directly proportional to which two factors?

Heart rate and stroke volume

If a patient's blood pressure is measured as 140/90 mmHg, which condition does this indicate?

Hypertension

Which of the following statements is false about pulmonary ventilation?

Inhalation results in a decrease in thoracic cavity volume.

What is the term for the maximum volume of air that can be inhaled after a normal inspiration?

Inspiratory reserve volume (IRV)

Which of the following is false about the apneustic center?

It controls the rate of expiration

What is the effect of hyperventilation on blood pH?

It increases blood pH (alkalosis)

Which of the following is false regarding the respiratory pattern generator?

It primarily controls voluntary breathing patterns.

Which of the following statements about surfactant is false?

Surfactant works by increasing the attraction of water molecules to each other.

What is the functional residual capacity (FRC) of the lungs?

The amount of air remaining in the lungs after a normal tidal exhalation

A tidal volume refers to the

amount of air inspired and then expired with each breath under resting conditions

The Mean Arterial pressure remains constant. If the radius decrease, what will happen to the cardiac output?

decrease

Increased contractility of the heart results in all but which of the following?

increased end systolic volume

Which of the following factors can increase cardiac output?

increased venous return

During which phase of the cardiac cycle is diastolic blood pressure measured?

none of the above