Answer:
A. Vena cava
Explanation:
The aorta can't be the answer because it is the largest artery in the human body and it carries oxygenated blood. The pulmonary artery carries deoxygenated blood into the lungs for oxygenation. The pulmonary veins transfer oxygenated blood from the lungs to the heart. And lastly, the vena cava is the right answer and it returns deoxygenated blood back into the heart.
C. they can do more harm then good.
Answer:
okay !!!!!!
Explanation:
this is school app so we shouldn't put the picture of any unwanted things !!! you are right
One question can most likely be, “How often do you go out for a daily run?” Or “How many times a week to you go to the gym or exercise on your own?”
Then again, I’m in middle school, your questions might be more different then mine. But I hope this helps.
Answer:
Olfactory fatigue, or nose blindness.
Explanation:
This is inability of an individual to perceive a particular smell after prolong exposure to the molecules of the odours substance.It due to gradual loss of sensitivity of the olfactory receptor cells after long exposure.
Olfactory fatigue is an adaptive process of the brain to prevent overloading of two many sensory inputs in the olfactory memory.
Therefore it blocks sensitivity of the olfactory receptors in the nasal membrane to the molecules of the usually exposed odours substances,so that new neural pathways for the newly acquired stimuli exposed to, will be created-(this is refers to as changed of neuron)
Thus it is the blockage of sensitivity of the olfactory receptors by the brain that explains reasons for lack of perception after prolong exposure.
