A patient is diagnosed with a tumor in the apex of his left lung (Pancoast tumor). The tumor mass is growing through the superior thoracic aperture, and is putting pressure on structures in the base of the neck. Physical examination reveals that the patient’s left pupil is much smaller (miosis) than his right pupil, and his left upper eyelid is somewhat droopy (ptosis). Additionally, the left side of the patient’s face appears more pale than the right side of his face. Based upon these findings, this patient’s droopy eyelid (ptosis) is caused by loss of motor innervation to which muscle?
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During DNA replication, which enzyme is first needed to crea…
During DNA replication, which enzyme is first needed to create the initial nucleic acid strand that complements the DNA strand? Which enzyme is then used to elongate the replicated strand (be specific)? If this replicating strand is the strand that is running towards the replication fork (with no other strands in front of it), what is this replicating strand called? [1.5 pts]
Following a head injury, a patient complains of “double visi…
Following a head injury, a patient complains of “double vision”. Physical examination shows that the superior oblique muscle in his right orbit is not functioning. He states that his vision improves when he tilts head to his left side, and tucks his chin towards his chest. Which of the following best describes what happens to the LEFT eye when he puts his head in this position?
Determine whether the given value is a statistic or a parame…
Determine whether the given value is a statistic or a parameter.A recent random sample of likely voters revealed that 39% believe that the United States is headed in the right direction.
The biological agent used to oxidize hydroxyacyl-CoA interme…
The biological agent used to oxidize hydroxyacyl-CoA intermediates in fatty acid oxidation is:
Following infection with “chicken pox” virus (varicella zost…
Following infection with “chicken pox” virus (varicella zoster), the virus can remain dormant (inactive) in sensory ganglia for many years. If the virus becomes active in the ganglion, it manifests as “shingles” (herpes zoster), which is characterized as a vesicular rash along the dermatome that is served by the sensory ganglion. The image shows a woman with “shingles” on her face. Based on this image, which sensory ganglion has the virus most likely to have become active in?
The ophthalmic artery supplies blood to the eye, and other s…
The ophthalmic artery supplies blood to the eye, and other structures in and around the orbit. The ophthalmic artery is a direct branch from which one of the following structures?
Where does the start of DNA replication start in eukaryotic…
Where does the start of DNA replication start in eukaryotic cells and in prokaryotic cells? Are there any differences between the two types of cells? [1 pt]
Does the length of the DNA strand shorten with each replicat…
Does the length of the DNA strand shorten with each replication cycle in eukaryotic cells? What about in prokaryotic cells? Explain your response. [2.5 pts]
Which scientist is credited with the concept of a virus? Wh…
Which scientist is credited with the concept of a virus? Which disease did he/she examine? [1 pt]