The esophagus undergoes peristalsis and the muscular movements force the bolus to the stomach, even against the force of gravity.
<h3>Which is not an involuntary part of the swallowing reflex?</h3>
The tongue rolls chewed food into a bolus and pushes it to the oropharynx. larynx.
Thus, The esophagus undergoes peristalsis and the muscular movements force the bolus to the stomach.
To learn more about esophagus click here:
brainly.com/question/22906056
#SPJ1
Answer:
Scientists observe the thickness of a tree’s ring's to learn about past climate conditions
Hope this helps :)
Have a great day !
5INGH
Explanation:
The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people.
<span>The
thylakoids of the chloroplast within the mesophyll cell is the greenest part of
the mesophyll cell. It is a membrane-bound compartment inside chloroplasts and
cyanobacteria. They are the site of the light-dependent reactions of
photosynthesis. However mesophyll cells in chlorenchyma tissue has chloroplast.
Furthermore, Mesophyll are the objects inside a cross-section of leaf which are
loosely packed cells that give the leaf a spongy appearance.</span>
