Week 1 Physiology Activity and Quiz 2021
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each of the black spaces below before clicking
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| Processes for maintaining or restoring homeostasis are known as | homeostatic control mechanisms.
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| The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorized as | organs that are directly influenced by physiological variables or mechanism.
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| Which level of control operates at the cell level, often using genes and enzymes to regulate cell function? | Intracellular regulation
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| Many complex processes of the body are coordinated at many levels. These include | - intracellular.
- intrinsic .
- extrinsic .
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| To accomplish self-regulation, a highly complex and integrated communication control system or network is required. This type of network is called a(n) | feedback control loop.
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| Which of the following is a basic component of every feedback control loop? | - Sensor mechanism
- Integrating center
- Effector
- Feedback
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| Events that lead to an immune response to an infection of the formation of a blood clot are examples of | positive feedback.
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| Because negative feedback control systems oppose changes that are opposite in direction to the initial disturbance, they are | slowed or maintained in the homeostatic range.
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| Local control or _______, intrinsic mechanisms often make use of chemical signals. | autoregulation
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| The concept that information may flow ahead to another process to trigger a change in anticipation of an event that will follow is called | feed-forward.
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| The body naturally changes some set points to different values at different times of the day. These daily cycles are called | circadian cycles.
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| The normal reading or range is called the | set point.
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| Extrinsic control usually involves which mode of regulation? | - Nervous
- Endocrine
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| The relatively constant state maintained by the body is known as | homeostasis.
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| Effectors can be described as | organs that directly influence controlled physiological variables.
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| What term describes a signal traveling toward a particular center or point of reference? | Afferent
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| Shivering to try to raise your body temperature back to normal would be an examples of | -the body trying to maintain homeostasis.
-a negative-feedback mechanism.
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| The normal reading or range of normal is called the | set point.
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| The contraction of the uterus during the birth of a baby is an example of ________ feedback | positive
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| Epidemiology is the study of the ________ of diseases in human populations. | -Occurrence
-Distribution
-Transmission
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| The term that literally means self-immunity is | autoimmunity.
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| Which of the following is a protein substance with no DNA or RNA and is thought to be the cause of mad cow disease? | Prion
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| Pathogenesis can be defined as | the course of disease development.
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| Homeostasis can best be described as | a state of relative constancy.
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| The body's thermostat is located in the | hypothalamus.
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| Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called | viruses.
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| Positive-feedback control systems | accelerate a change.
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| If the secretion of oxytocin during childbirth operated as a negative-feedback control loop, what effect would it have on uterine contractions? | Oxytocin would inhibit uterine contractions.
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| Which of the following is not one of the basic components in a feedback control loop? | Transmitter
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| Negative-feedback mechanism | -minimize changes in blood glucose levels.
-maintain homeostasis
-are responsible for an increased rate of sweating when air temperature is higher than body temperature.
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| Negative-feedback control systems | oppose a change.
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| Of the 11 major body systems, which is the least involved in maintaining homeostasis? | Reproductive
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| Which of the following may put one at risk for developing a given disease? | -Environment
-Stress
-Lifestyle
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| Of the pathogenic organisms, which of the following are the most complex? | Tapeworms
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| Intrinsic control: | is sometimes called autoregulation.
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Created by:
Brandi Sizemore
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