Question

In: Anatomy and Physiology

EACH STATEMENT IS A T/F QUESTION PLEASE ANSWER ALL 12 Pulmonary function limits physical performance because...

EACH STATEMENT IS A T/F QUESTION PLEASE ANSWER ALL 12

Pulmonary function limits physical performance because transit time through the pulmonary capillaries is reduced to 0.4 seconds during maximal exercise which is not enough time for complete oxygenation of the blood.

Oxygen binds to the globin portion of the hemoglobin molecule.

HCO3- diffuses out to plasma at tissue level and chloride (Cl-) into the RBC, known as chloride shift.

Carbonic anhydrase is present in the RBC and catalyzes the formation of lactate.

During exercise, tidal volume does not change relative to tidal volume at rest

Alveoli are the lung structure where gas exchange takes place.

Partial pressure of a specific gas affects the driving force behind that gas.

The immediate and largest increase in ventilation during exercise is due to changes to chemistry of arterial blood.

An increase in pH is in part responsible for the Bohr effect.

Inhalation is an active process, it involves contraction of the diaphragm.

Cooperative binding refers to the ease at which O2 binds to Hb with each subsequent O2.

HCO3- (bicarbonate) accounts for the majority of CO2 transport.

Solutions

Expert Solution

Statement 1:

Pulmonary function limits physical performance because transit time through the pulmonary capillaries is reduced to 0.4 seconds during maximal exercise which is not enough time for complete oxygenation of the blood.

Answer: True

Statement 2:

Oxygen binds to the globin portion of the hemoglobin molecule.

Answer: False

Oxygen binds to the heme portion of the RBC.

Statement 3:

HCO3- diffuses out to plasma at tissue level and chloride (Cl-) into the RBC, known as chloride shift.

Answer: False

The HCO3- diffuses out of the membrane or the RBC in exchange for a chloride (Cl-). All of this happen within the RBC.

Statement 4:

Carbonic anhydrase is present in the RBC and catalyzes the formation of lactate.

Answer: False

Carbonic anhydrase helps in the formation of carbonic acid and bicarbonate ions from CO2.

Statement 5:

During exercise, tidal volume does not change relative to tidal volume at rest.

Answer: False

Tidal volume increases with physical activities.

Statement 6:

Alveoli are the lung structure where gas exchange takes place.

Answer: True

Statement 7:

Partial pressure of a specific gas affects the driving force behind that gas.

Answer: True

Statement 8:

The immediate and largest increase in ventilation during exercise is due to changes to chemistry of arterial blood.

Answer: False

The increase in ventilation is due to the changes in the venous blood.

Statement 9:

An increase in pH is in part responsible for the Bohr effect.

Answer: True.

Statement 10:

Inhalation is an active process, it involves contraction of the diaphragm.

Answer: True

Statement 11:

Cooperative binding refers to the ease at which O2 binds to Hb with each subsequent O2.

Answer: True

Statement 12:

HCO3- (bicarbonate) accounts for the majority of CO2 transport.

Answer: True.


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