Explain homeostasis as it relates to the human body
What will be an ideal response?
Homeostasis is the body's ability to maintain relative stable internal conditions even though the outside world is continuously changing. Homeostasis is a dynamic state of equilibrium, or a balance in which internal conditions change and vary but always within relatively narrow limits. The body demonstrates homeostasis when its needs are being adequately met and it is functioning smoothly.
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The force that moves air into the lungs during inspiration comes from the
A. diaphragm. B. atmospheric pressure. C. external intercostal muscles. D. abdominal wall muscles.
Isovolumetric contraction ________.
A) refers to the short period during ventricular systole when the ventricles are completely closed chambers B) occurs while the AV valves are open C) occurs immediately after the aortic and pulmonary valves close D) occurs only in people with heart valve defects
Which of the following is not part of the coronary circulation?
A. Coronary sinus B. Circumflex branch C. Thebesian veins D. Anterior interventricular branch E. Aorta
Which of the following is not involved with spinal gating of pain signals?
A) Lower motor neurons B) The spinothalamic tract C) Second-order neurons D) The reticulospinal tract E) Nociceptors