Physiolab Long Exam

TRUE

Normal Expiration is a passive process resulting from the natural recoil or elasticity of the expanded lung and chest wall.

TRUE

Small fluctuations of alveolar and arterial gas tensions occur with each tidal breath as fresh gas moves with alveolar air.

TRUE

Hyperventilation can cause metabolic alkalosis.

TRUE

"During a maximal inspiration, the diaphragm contracts, forcing the abdominal contents and muscles downward." TRUE

TRUE

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"Total lung capacity is not affected by factors such as weight, sex, age and activity." "A pulse is due to a surge of blood entering the arteries, which cause the elastic walls to swell, but then almost immediately recoil."

Question 7 3.00000 out of 3.00000 points

Blood pressure increases with distance from the left ventricle of the heart.

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Question 8 3.00000 out of 3.00000 points

The amount of air that can be moved in and out with each breath can be called tidal volume.

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Question 9 0.00000 out of 3.00000 points

"Air moves from the nasal cavities to the pharynx, to the trachea, to the bronchioles, to the bronchi and to the alveoli found in the lungs."

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Question 10 3.00000 out of 3.00000 points

The Powerlab® Force Transducer maybe attached to the apex of the heart to measure the heart rate of a certain organism.

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Question 11 0.00000 out of 3.00000 points

An extra systole may be induced in the heart with multiple stimulation.

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Question 12 3.00000 out of 3.00000 points

"The volume in the ventricles at the end of diastole, just before cardiac contraction is called end diastolic volume."

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Question 13 3.00000 out of 3.00000 points

Stroke volume may be computed by subtracting end diastolic volume from end systolic volume.

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Question 14 0.00000 out of 3.00000 points

Glomerular filtration is an active process in which fluid passes from the lumen of the glomerular capillary into the glomerular capsule.

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Question 15 3.00000 out of 3.00000 points

"Digitalis is used in surgery to manipulate the heart beat, specifically when there is a need to slow down the heart rate of the patient."

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Question 16 3.00000 out of 3.00000 points

"When epinephrine is applied to the heart, heart rate is increased, especially when compared to the heart rate when pilocarpine is applied."

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Question 17 3.00000 out of 3.00000 points

A surfactant is a detergent like lipoprotein that increases surface tension by reducing the attraction of water molecules to each other.

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Question 18 3.00000 out of 3.00000 points

"Boiling a solution made up of starch, amylase, and pH 7 buffer before incubating at 370C will replicate the action of salivary amylase on carbohydrates in the human body."

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Question 19 3.00000 out of 3.00000 points

Metabolic Acidosis is characterized by high plasma HCO3- and low pH.

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Question 20 3.00000 out of 3.00000 points

"Tubular reabsorption moves most of the filtrate back into the bloodstream, leaving principally pure water plus wastes in the lumen of the tubule. These are then excreted through the urine."

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Question 21 3.00000 out of 3.00000 points

Benedict's test depends on the oxidation of Copper

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Question 22 3.00000 out of 3.00000 points

Protein digestion is measured as an increase in pH

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Question 23 3.00000 out of 3.00000 points

The afferent arteriole is generally bigger than the efferent arteriole

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Question 24 0.00000 out of 3.00000 points

Athlete's have a higher total lung capacity than non-athletes

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Question 25 3.00000 out of 3.00000 points

FEV1% of patients with emphysema ?50%

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Question 26 3.00000 out of 3.00000 points

"During exercise, the tidal volume decreases "

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Question 27 3.00000 out of 3.00000 points

The functional residual capacity decreases in patients with asthma.

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Question 28 0.00000 out of 3.00000 points

The residual volume is lower in normal than in asthmatics.

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Question 29 3.00000 out of 3.00000 points

FEV1 is higher in asthmatics than in those with emphysema.

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Question 30 3.00000 out of 3.00000 points

The amount of air that is expelled with maximal expiratory effort in excess of tidal volume

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Question 31 0.00000 out of 3.00000 points

 ______ is an acetylcholine esterase inhibitor.

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Question 32 3.00000 out of 3.00000 points

Direct stimulation of heart muscles results in

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Question 33 3.00000 out of 3.00000 points

"When the chest wall is punctured, the lungs collapse because "

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Question 34 3.00000 out of 3.00000 points

Respiration in mammals develop

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Question 35 3.00000 out of 3.00000 points

"If the blood pressure is 120 / 80, the systolic pressure is"

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Question 36 3.00000 out of 3.00000 points

"A normal person has a heart rate of 72 bpm. If he is given digitalis that lowers HR by 1/3, his heart will beat roughly"

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Question 37 3.00000 out of 3.00000 points

Glomerular filtration rate ______ when there is an increase in the radius of the efferent tubules.

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Question 38 0.00000 out of 3.00000 points

Urine volume _____ when there is an increase in the radius of the efferent tubules.

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Question 39 3.00000 out of 3.00000 points

Urine concentration ____ when ADH enters the system.

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Question 40 3.00000 out of 3.00000 points

" According to Starling's Law of the heart, stretching the heart ____ the cardiac output."

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Question 41 0.00000 out of 3.00000 points

VC + RV

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Question 42 0.00000 out of 3.00000 points

Vt +ERV

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Question 43 0.00000 out of 3.00000 points

IRV + ERV + Vt

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Question 44 0.00000 out of 3.00000 points

VC x 0.25

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Question 45 0.00000 out of 3.00000 points

ERV + RV