Answer:
b. False
Explanation:
The umbilical vein carries oxygen rich blood from the placenta to the fetus. The umbilical artery carries deoxygenated blood from the fetus to the placenta.
Answer:
Skeletal muscle can contract without shortening.
It can shorten (isotonic, concentration), elongate (isotonic,eccentric), or remain the same length (isomertric), depending on the relationship between the load (resistance) and the tension produced by actin-myosin interactions.
When you shine a light into one pupil, the normal reaction of the other pupil should be to become smaller.
Penlight
The most popular tool for measuring pupil diameter now has a light source and is a penlight. One pupil contracts in reaction to light, whereas the other either doesn't contract at all or contracts more slowly.
Use a penlight to get the maximum amount of pupil contraction in one eye, then quickly move to the other eye and return to the first. A consensual reaction normally causes the second eye to respond with the same pupillary constriction as the first.
Penlight is a useful examination tool for doctors, particularly for small body parts like the mouth, nose, ears, and eyes. They frequently employ it for the pupil test, a physical examination technique used to determine whether pupils contract or remain dilated in response to light.
To learn more about the penlight refer here:
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Answer: Option A
Explanation:
A peural effusion can be defined as the increase in the amount of fluid present around the lungs. Many medical condition can lead to increase in this fluid.
These conditions can be any type of injury or infection, mostly in the lungs.Pleura is a thin membrane that lies at the surface of lungs and inside the wall of chest.
In case of pleural effusion fluid deposits in the space between the layers of pleura. Leaking from other organs can be one of the reasons of pleural effusion.
Some infections like pneumonia and cancer can also lead to pleural effusion.
Hence, the correct answer is" Pleural effusion."
