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Physiology

Midterm weeks 1-6

QuestionAnswer
Epidemiology is the study of the ______ of diseases in human popularion All of the above Answer- Occurance, distribution, transmission
Of the 11 major body systems, which is the least involved in maintaining homeostasis? reproductive other options- Circulatory, Endocrine, Lymphatic
Of the pathogenic organisms, which of the following are the most complex? Tapeworms Other options- Viruses, Bacteria, Protozoa
Homeostasis can best be described as A state of relative constancy
Shivering to try to raise your body temperature back to normal would be an example of Both A and C Options-A: the body trying to maintain homeostasis, B: a positive feedback mechanism, C: a negative feedback mechanism
Which of the following is not one the basic components in a feedback control loop Transmitter other options- effector mechanism, Sensor, Integrating center
Pathogenesis can be defined as The course of disease development
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
Which of the following may put one at risk for developing a given disease All of the above Options- Environment, stress, lifestyle
The bodys thermostat is located in the hypothalamus
Intrinsic control is sometimes called "autoregulation"
Negative-feedback mechanisms All of the above options- minimize changes in blood glucose levels, maintain homeostasis, are responsible for an increased rate of sweating when air temperature is higher than body temperature
of the 11 major body systems, which is the least involved in maintaining homeostasis Reproductive other options- Circulatory, endocrine, lymphatic
Intrcellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by a lipoprotein envelope are called viruses
The term that literally means self-immunity is autoimmunity
The contraction of the uterus during the birth of a baby is an example of _________ feedback Positive
Negative feedback control systems oppose a change
If the secretion of oxytocin during childbirth as a negative feedback control loop, what would it have on uterine contractions Oxytocin would inhibit uterine contractions
Positive-feedback control systems accelerate a change
The normal reading or range of normal is called the set point
The body naturally changes some set points to different values at different times of the day. These daily cycles are called: Circadian cycles
What term describes a signal traveling towards a particular center or point of reference? Afferent
Which of the following is a basic component of every feedback control loop? All of the above other options- sensor mechanism, integrating center, effector, feedback
Events that lead to an immune response to an infection or the formation of a blood clot are examples of Positive feedback
Which level of control operates at the cell level, often using genes and enzymes to regulate cell function intracellular regulation
Effectors can be descrived as Organs that directly influence controlled physiological variables
Beacause 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 relatively constant state maintained by the body is knows as Homeostasis
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
Processes for maintaining or restoring homeostasis are known as Homeastatic control mechanisms
Many complex processes of the body are coordinated at many levels. These include all of the above options- 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) feed-back control loop
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 mechanisms
Extrinsic control usually involves which mode of regulation? Both A and C Options- nervous, integration
Created by: timnauer
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