Cardiac-muscle cells are striated<span>, and are a lot like skeletal-muscle </span>cells<span> except that in cardiac muscle, the fibers are </span>interconnected<span>. The </span>sarcoplasmic reticulum<span> of cardiac-muscle cells is not as well-developed as that of skeletal-muscle cells. Cardiac-muscle contraction is </span>actin-regulated<span>, meaning that the calcium ions come both from the sarcoplasmic reticulum (as in skeletal muscle) and from outside the cell (as in smooth muscle). Otherwise, the chain of events that occurs in cardiac-muscle contraction is similar to that of skeletal muscle.</span>
Answer: Attention deficit hyperactivity disorder (ADHD) is a common problem affecting children and adolescents. ADHD is characterized by inattention (being easily distracted, unable to focus on one task), impulsivity (fidgety; constantly moving), and hyperactivity (impatient; acts without thinking). One of the most common treatments for managing ADHD is the drug class of amphetamines, which are a class of stimulant medications. They are thought to reduce the severity of symptoms associated with ADHD.
Explanation:
Refrigerated food should be eaten within 3-4 days of it being in the Refrigerated cooked food.
