Is he taking any drugs for sexual enhancement or erectile dysfunction!?!?
Nitroglycerin is a vasodilator, which means that it relaxes and dilates (widens) blood vessels; this is a positive effect for coronary arteries, whose narrowing and/or occlusion (blockage) may be the cause of [cardiac] chest pain.
But, other vessels throughout the body also dilate, which can be good in hypertension.
However, a specific class of drugs known as phosphodiesterase-5 inhibitors (PDE-5-I), which includes sex-enhancing drugs for erectile dysfunction (ED), will irreversibly keep body vessels dilated when nitroglycerin is also present in the bloodstream. This can lead to a life-threatening pooling of blood of the arms and legs (extremities) and lower body, keeping adequate blood from reaching the heart, lungs, and brain. This emergency is known as vasogenic shock!
Examples of PDE-5 inhibitors are Viagra, Levitra, and Cialis. [generic names of this class are: vardenafil, sildenafil, tadalafil and avanafil]
I’m pretty sure the answer is A or c
I hope this helps narrow down choices
Answer: secondary succession
Explanation: An ecological succession can be defined as a change that occur in the biotic community of the ecosystem with respect to the changes that occur in the abiotic factors like water, soil and climatic conditions with respect to time.
Secondary succession can be defined as the changes that occur in an area which was previously occupied by the living species and the area was disturbed by either human intervention or natural calamity.
Brazil clear cut is an example of secondary succession because after the clear cut some precursors like seeds, roots and other parts of the plants or trees can support the regrowth of plants and trees. Initiating the succession again.
Rod: night vision
Cone: day vision
Answer: false
Explanation:
in mammals, bulk flow is referred to the movement of oxygen as well as carbondioxide
