Answer:
A
Explanation:
:) the hard part mostly the bones are left behind.
Answer:
Earth Science 101: Earth Science has been evaluated and recommended for 3 semester hours and may be transferred to over 2,000 colleges and universities. Expert instructors present this material in an easy-to-follow manner, and lessons are accessible at all times, from any device, so you can study at your own pace as you get started on your degree
Explanation:
Hope this helps you :)
Answer:
False
Explanation:
The most specific feature of cardiac muscles is the presence of intercalated discs. Intercalated disc connects the ends of cardiac muscle fibers to one another. The discs have desmosomes and gap junctions. The function of desmosomes is to hold the cardiac fibers together. The gap junctions of cardiac fibers allow muscle action potentials to spread from one cardiac muscle fiber to another. These gap junctions have tubular connexons that form channels and connect the cytosol of adjacent cardiocytes to allow the flow of ions and spread of action potential from one cell to another.
When blood is in the lungs,
where oxygen is plentiful, oxygen easily binds to the first subunit and then quickly fills up the remaining ones. Then, as blood circulates through the body, the oxygen level drops while that of carbon dioxide increases. In this environment, hemoglobin releases its bound oxygen.