Answer:
Circular and Radial muscles.
Explanation:
The pupilarry response is the variation of pupil's size due to a variety of causes (exposure to light, sexual stimulation, drugs) and it consists of two movements, constriction and dilation.
<em>The constrict response occurs thanks to the circular muscle and the dilations is triggered by the radial muscle, both of them are smooth muscle.</em>
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Bacteria and Archea. They are single celled
The space between the parietal layer and visceral layer of the pericardium contains serous fluid. It is a tissue of the hearth.
<h3>What is pericardium?</h3>
The pericardium is one of the three tissues that form the hearth, which also includes the myocardium and epicardium.
The pericardium forms a highly fibrous structure that is capable of holding heart tissues and blood vessels.
Pericardial fluid is composed of a serous liquid that is produced by the pericardium and released into the pericardial cavity.
Learn more about pericardium here:
brainly.com/question/1224295
<span>Chemical properties, such as density, must be observed when a substance is in its natural state at room temperature and normal atmospheric pressure.</span>
