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Physiology 7-13

QuestionAnswer
Shivering to try to raise your body temperature back to normal would be an example of: -the body trying to maintain homeostasis. -a positive-feedback mechanism. -a negative-feedback mechanism. the body trying to maintain homeostasis and a negative-feedback mechanism
Which of the following is not one of the basic components in a feedback control loop? -Effector mechanism -Transmitter -Sensor -Integrating center transmitter
The ability of muscle cells to respond to nerve stimuli is called: irritability
Which type of muscle is responsible for peristalsis? single-unit smooth
Which of the following is not used by the body as a neurotransmitter? -nitric oxide -acetylcholine -carbon monoxide -all the above are used by the body as neurotransmitters all the above are used by the body as neurotransmitters
Afferent nerves or fibers are found only in the _____ nervous system. sensory and autonomic
The difference between systolic pressure and diastolic pressure is called pulse pressure
The mechanisms of which three hormones work together to regulate blood volume? aldosterone, ANH, and ADH
Activities that result in central movement or flow of lymph are called lymphokinetic activities
One hundred milliliters of arterial blood contains approximately what volume percent of oxygen? 20%
The major form by which carbon dioxide is transported in the circulatory system is: bicarbonate ions
The major site for the absorption of the end products of digestion is the: small intestine
The process of fat emulsification consists of: breaking fats into small droplets
Which of these is not an example of mechanical digestion? -Moistening the food -Changing food from large to small particles -Propelling food through the digestive tract -All of the above are examples of mechanical digestion. Moistening the food
When an impulse reaches a synapse: chemical transmitters are released
The fastest nerve fibers in the body can conduct impulses up to approximately _____ meters per second. 130
The term used to describe the volume of air exchanged during normal inspiration and expiration is: tidal volume
Cerebrospinal fluid is part of the _____ fluid. extracellular
A _____ is a functional group that is temporarily unattached and is highly reactive because of unpaired electrons. free radical
Which of the following is a description of the principle of autonomic antagonism as it relates to the autonomic nervous system? If sympathetic impulses tend to stimulate an effector, parasympathetic impulses tend to inhibit it.
During inspiration, the expansion of the lungs causes: a decrease in alveolar pressure.
Cellulose is a residue of digestion that comes from: carbohydrates
A type of breathing characterized by gradually increasing tidal volume for several breaths followed by several breaths with gradually decreasing tidal volume is: Cheyne-Stokes respiration.
Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: hematopoietic stem cells.
Dalton law states that the partial pressure of a gas in a mixture of gases is _____ to the total pressure of the mixture directly related to the concentration of that gas in the mixture and
Adaptive immunity, part of the body's third line of defense, is orchestrated by two different classes of a type of white blood cell called the lymphocyte.
Which antibody is synthesized by immature B cells and then inserted into their plasma membranes? immunoglobulin M
If the ventral nerve root of a spinal nerve were destroyed, a person would lose _____ related to that pathway. willed movement
Created by: mbikehlum
 

 



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