Answer:
No one can see in total darkness. Fortunately, there’s almost always some light available. Even if it’s only dim starlight, that’s enough for your eyes to detect. What’s truly amazing is how little light is required for you to see.
Human eyes have two main features that help us see better in low light: the pupil’s ability to change size, and the eye’s two types of light-sensing cells.
Opening up to let in more light
Your pupils are the black areas at the front of your eyes that let light enter. They look black because the light that reaches them is absorbed inside the eyeball. It’s then converted by your brain into your perceptions of the world.
You’ve probably noticed that pupils can change size in response to light. Outside on a bright sunny day, your pupils become very small. This lets less light into the eye since there’s plenty available
The endocrine system describes as the mediator of hormonal synthesis and action in the human body.
<h3>What do you mean by Endocrine system?</h3>
The endocrine system may be defined as a system that is composed of various glands and organs which are responsible for the secretion of hormones into the bloodstream and play their role at the target sites.
The endocrine system is controlled by the hypothalamus and the pituitary gland. They release numerous hormones that affect the adrenal gland, thyroid gland, reproductive organs, blood glucose level, and many more.
Therefore, it is well described above.
To learn more about the Endocrine system, refer to the link:
brainly.com/question/2795343
#SPJ1
Things that belong to the country where they were found, rather than coming there or being brought there from another country.
Answer:
storm waves, ocean currents
Explanation:
Answer:
The bell of the stethoscope is used during auscultation to listen for low pitched sounds typical of a heart murmur.
Explanation:
Auscultation is a diagnostic test that listens to sounds from the heart, lungs, bowels, the circulatory system and other parts of the human body.
The stethoscope is an instrument that is designed for auscultation.
The diaphragm of the stethoscope listens for high pitched sounds typical of the bowels, a normal heart, and breathing.
The bell of the stethoscope listens for low pitched sounds typical of a heart murmur.