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Brandi Sizemore

Week 1 Physiology Activity and Quiz 2021

QuestionAnswer
Processes for maintaining or restoring homeostasis are known as homeostatic control mechanisms.
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.
Which level of control operates at the cell level, often using genes and enzymes to regulate cell function? Intracellular regulation
Many complex processes of the body are coordinated at many levels. These include - intracellular. - intrinsic . - extrinsic .
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.
Which of the following is a basic component of every feedback control loop? - Sensor mechanism - Integrating center - Effector - Feedback
Events that lead to an immune response to an infection of the formation of a blood clot are examples of positive feedback.
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.
Local control or _______, intrinsic mechanisms often make use of chemical signals. autoregulation
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.
The body naturally changes some set points to different values at different times of the day. These daily cycles are called circadian cycles.
The normal reading or range is called the set point.
Extrinsic control usually involves which mode of regulation? - Nervous - Endocrine
The relatively constant state maintained by the body is known as homeostasis.
Effectors can be described as organs that directly influence controlled physiological variables.
What term describes a signal traveling toward a particular center or point of reference? Afferent
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.
The normal reading or range of normal is called the set point.
The contraction of the uterus during the birth of a baby is an example of ________ feedback positive
Epidemiology is the study of the ________ of diseases in human populations. -Occurrence -Distribution -Transmission
The term that literally means self-immunity is autoimmunity.
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
Pathogenesis can be defined as the course of disease development.
Homeostasis can best be described as a state of relative constancy.
The body's thermostat is located in the hypothalamus.
Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called viruses.
Positive-feedback control systems accelerate a change.
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.
Which of the following is not one of the basic components in a feedback control loop? Transmitter
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.
Negative-feedback control systems oppose a change.
Of the 11 major body systems, which is the least involved in maintaining homeostasis? Reproductive
Which of the following may put one at risk for developing a given disease? -Environment -Stress -Lifestyle
Of the pathogenic organisms, which of the following are the most complex? Tapeworms
Intrinsic control: is sometimes called autoregulation.
Created by: Brandi Sizemore
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