A&P1 Chapter 1 Critical Thinking
At the clinic, Harry was told that blood would be drawn from his antecubital region. What body part was Harry asked to hold out? Later the nurse gave Harry a shot of penicillin in the area just distal to his acromial region. Did Harry take off his shirt or drop his pants to receive the injection? Before he left, the nurse noticed a nasty bruise on his gluteal region. What part of his body was black and blue?
He was asked to hold out his arm (anterior aspect of elbow). He took off his shirt. His butt was black and blue.
Mr. Harvey, a computer programmer has been complaining of numbness and pain in his right hand. The NP diagnosed his problem as carpal tunnel and prescribed use of a splint. Where will Mr. Harvey apply the splint?
His wrist/forearm. The carpal region is found at the wrist.
A man is behaving abnormally and his physician suspects he has a brain tumor. Which technique would best localize the tumor in the man's brain and why? Conventional xray DSA PET Sonography MRI
Of the procedures listed, MRI would be the best choice because dense structures (e.g., the skull) do not impair the view with this technique, and it is best at producing a high-resolution view of soft tissues, particularly neural tissue. Furthermore, MRI can provide information about chemical conditions in a tissue. Thus, once the suspected tumor is localized, MRI can perform a "metabolic biopsy" to determine if it is cancerous...all of this without surgery.
Calcium levels in Mr. Gallariani's blood are dropping to dangerously low levels. The hormone PTH is released and soon blood calcium levels begin to rise. Shortly after, PTH release slows. Is this an example of positive or negative feedback mechanism? What is the initial stimulus? What is the result?
This is an example of a negative feedback mechanism. The initial stimulus is the drop in blood calcium. This drop in blood calcium causes the release of PTH, which triggers bone to be broken down releasing calcium into the blood raising the blood calcium levels. The original downward trend of the calcium was stopped and reversed.
Aiden has been suffering agonizing pain with each breath and has been informed by the physician that he has pleurisy. Specifically what membranes are involved in this condition? What is their usual role in the body? Explain why Aiden's condition is so painful.
a. Parietal and/or visceral pleural membranes. b. The membranes allow the organs to slide easily across the cavity walls and one another without friction. c. The organs and membranes stick together and grate against one another, creating friction, heat, and pain.
