5 Some students were asked to identify which cells contain the greatest number of mitochondria. They were given the following choices: blood, epidermal, cardiac, and
nerve cells. Which of the following is the best response?
A Blood cells, because they must carry oxygen throughout the body all the time,
which requires energy.
B Nerve cells, because energy is needed to relay messages throughout the body
C Cardiac muscle cells, because the heart must work all the time, requiring constant
energy.
D Epidermal cells, because the skin must constantly grow new skin cells, which
requires energy.

C.) Cardiac muscle cells, because the heart must work all the time, requiring constant

Explanation:

Our heart muscles contain so much mitochondria because those muscles are very active in our body and require lots of energy to constantly pump blood through our circulatory system. Mitochondria produce energy in the form of ATP from glucose (sugar) in our cells.

dang you just copied and pasted

explanation:

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.