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Joy Cruz

Physiology Final

QuestionAnswer
The term used to describe the collection of mechanisms that influence the circulation of blood is: Hemodynamics
Cardiac output is determined by stroke volume and heart rate.
The mechanisms of which three hormones work together to regulate blood volume? aldosterone, ANH, and ADH
Which of the following is true of ventricles They are the pumping chambers of the heart. The myocardium of the ventricles is thicker than that of the atria. The myocardium of the left ventricle is thicker than that of the right ventricle.
Inhibition of sympathetic vasoconstrictor impulses is considered a major mechanism of Vasodilation
Which two factors promote the return of venous blood to the heart? blood-pumping action of respirations and skeletal muscle contractions
____ is used to determine the volume percentage of red blood cells in whole blood. Hematocrit
All of the following are components critical to coagulation Prothrombin, thrombin, fibrinogen, fibrin
A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is erythropoietin
Factors that affect the strength of myocardial contraction are called Intropic factors
The physiological mechanism that dissolves clots is known as Fibrinolysis
The difference between systolic pressure and diastolic pressure is called Pulse pressure
Neutrophils are highly mobile and phagocytic. They migrate out of blood vessels and into tissue spaces. This process is called Diapedesis
Starling’s law of the heart states that, within limits, the longer, or more stretched, the heart fibers are at the beginning of the contraction, the Stronger the contraction
The localized pressure gradient needed to maintain blood flow in a tissue is called perfusion pressure.
The term blood type refers to the type of blood cell Antigen
The ability of the lungs and thorax to stretch is referred to as compliance.
More than two-thirds of the carbon dioxide carried by blood is carried in the form of bicarbonate ions
According to the law of partial pressures, the partial pressure of gas in a mixture of gases is directly related to the concentration of that gas in the mixture and to the total pressure of the mixture.
The _____ represents the largest volume of air an individual can move in and out of the lungs. vital capacity
The exact amount of oxygen in blood depends mainly on the amount of Hemoglobin
Which term refers to the volume of inspired air that actually reaches, or “ventilates,” the alveoli? alveolar ventilation
__________ law states that the volume of a gas is inversely proportional to its pressure. Boyles
An increase in carbon dioxide in the blood causes a drop in pH in the blood.
What variations exist in the body to temporarily store or carry oxygen? Neuroglobin, myoglobin, fetal hemoglobin
During inspiration, as the size of the thorax increases, the intrapleural and alveolar pressures decrease.
During the respiratory cycle, intrapleural pressure is always less than alveolar pressure. This difference is called transpulmonary pressure.
The exit of the bicarbonate ion from the red blood cell is balanced by the inward transport of another negative ion, chloride. This countertransport of negative ions is often called the _____ shift. Chloride
Which of the following would have the greatest accelerating effect on the dissociation of oxygen from hemoglobin? Decreased PO2 and increased PCO2
During inspiration, the expansion of the lungs causes: a decrease in alveolar pressure.
Vital capacity is defined as the: Maximum volume of air that can be moved into and out of the lungs during forced respiration.
Carbon dioxide is carried in three forms in the blood. Ranking them from greatest to least amount carried, the sequence would be: bicarbonate ion, carbaminohemoglobin, and dissolved in plasma.
The PCO2 in alveolar air is _____ blood. less than in the systemic venous equal to the systemic arterial
The symbol HbNCOOH– is used for: carbaminohemoglobin
The ejection of bile from the gallbladder is controlled by which hormones? CCK and secretin
Pepsinogen is converted to pepsin by hydrochloric acid, which is produced by the _____ of the gastric glands. parietal cells
The hormone that stimulates the gallbladder to release bile is: cholecystokinin.
An end product of fat digestion is: glycerol
The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen. passively out of
Glucose moves from the GI tract into the circulatory system by the process of: cotransport.
The hormone thought to be a messenger causing release of digestive enzymes from the intestinal mucosa is: vasoactive intestinal peptide.
The enterogastric reflex causes: inhibition of gastric peristalsis.
The final product of carbohydrate digestion is a: monosaccharide
Cellulose is a residue of digestion that comes from carbohydrates
Serotonin is an example of a(n): amine neurotransmitter
The fastest nerve fibers in the body can conduct an impulse that is how much faster than the slowest fibers in the body? almost 500 times faster
The only ion(s) that can diffuse across a neuron’s membrane when the neuron is at rest is (are): potassium
Severe depression can be caused by a deficit in certain brain synapses of: amines
The neurotransmitter(s) that inhibit(s) the conduction of pain impulses is(are) enkephalins
Which of the following is true of spatial summation? Neurotransmitters released simultaneously from several presynaptic knobs converge on onepostsynaptic neuron
Which is true of a neuron with a resting potential? The sodium pump has moved Na to the outside of the plasma membrane
Dopamine, epinephrine, and norepinephrine are classified as: catecholamines
Which of the following antidepressants acts by blocking the action of monoamineoxidase (MAO)? phenelzyine
Created by: JoyCruz
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