3513280
Descripción
Test por Wendell Thomas, actualizado hace más de 1 año
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Creado por Wendell Thomas
hace más de 8 años
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Pregunta 1
Pregunta
In a negative feedback loop used to maintain homeostasis, which of the following terms is NOT likely to be used?
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set point
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integrating center
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keratinized, stratified squamous epithelium
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effector
Pregunta 2
Pregunta
The organ that best regulates body temperature is the
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skin
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brain
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kidney
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heart
Pregunta 3
Pregunta
Most often, the integrating center in a feedback loop will be located within the _______.
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peripheral nervous system
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central nervous system
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effectors
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heart
Pregunta 4
Pregunta
Homeostasis is best conceived as a state of
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negative feedback
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positive feedback
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dynamic constancy
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hormone and nerve regulation
Pregunta 5
Pregunta
Which of the following is NOT a primary tissue?
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Connective
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Epithelial
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Squamous
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Nervous
Pregunta 6
Pregunta
Which of the following glands has both endocrine and exocrine functions?
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Mammary glands
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Pancreas
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Adrenal glands
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Prostate
Pregunta 7
Pregunta
The scattered fibrous protein characteristic of many connective tissues is
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dentin
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keratin
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cartilage
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collagen
Pregunta 8
Pregunta
The skin secretes sweat, and thus is an exocrine organ. It is also considered an endocrine gland because it
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synthesizes and secretes sebum
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synthesizes and secretes vitamin D
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stores and releases fat
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plays an important role in our immune functioning
Pregunta 9
Pregunta
Like most physiological parameters, blood pH is very tightly regulated and rarely falls outside the narrow range of 7.35-7.45 in healthy individuals.
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Always true
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Sometimes true
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Never true
Pregunta 10
Pregunta
Positive feedback loops have antagonistic effectors that work together to continuously move a particular variable toward a set point.
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Always true
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Sometimes true
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Never true
Pregunta 11
Pregunta
Organs possess all four types of tissue.
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Always true
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Sometimes true
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Never true
Pregunta 12
Pregunta
When the level of calcium ions in our blood strays too far away from the set point, more of the hormone calcitonin is released from the parathyroid glands.
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Always true
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Sometimes true
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Never true
Pregunta 13
Pregunta
Pluripotent stem cells can divide, grow and differentiate into any specialized type of cell in the body.
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Always true
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Sometimes true
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Never true
Pregunta 14
Pregunta
A primary function of an organ system is to maintain homeostasis.
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Always true
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Sometimes true
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Never true
Pregunta 15
Pregunta
Check all the statements that are true regarding the diagram.
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When moving from a reclining to a standing position, gravity causes a drop in blood pressure in the head.
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Pressure receptors in blood vessels signal the central nervous system when there is a significant change in blood pressure.
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In this reflex, the pressure receptors are the effectors.
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If this reflex does not function properly, a person may faint due to lack of blood flow to the brain.
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Increased heart rate, leads to increased cardiac output, which raises blood pressure.
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