Answer: it doesn't
Explanation: Why? The aorta is the largest artery in the body. The aorta begins at the top of the left ventricle the heart's muscular pumping chamber. The heart pumps blood from the left ventricle into the aorta through the aortic valve. Three leaflets on the aortic valve open and close with each heartbeat to allow one-way flow of blood. The aorta is a tube about a foot long and just over an inch in diameter. The aorta is divided into four sections:
• The ascending aorta rises up from the heart and is about 2 inches long. The coronary arteries branch off the ascending aorta to supply the heart with blood.
• The aortic arch curves over the heart, giving rise to branches that bring blood to the head, neck, and arms.
• The descending thoracic aorta travels down through the chest. Its small branches supply blood to the ribs and some chest structures.
• The abdominal aorta begins at the diaphragm, splitting to become the paired iliac arteries in the lower abdomen. Most of the major organs receive blood from branches of the abdominal aorta.
Like all arteries, the aorta's wall has several layers:
• The intima, the innermost layer, provides a smooth surface for blood to flow across.
• The media, the middle layer with muscle and elastic fibers, allows the aorta to expand and contract with each heartbeat.
• The adventitia, the outer layer, provides additional support and structure to the aorta.
Oxygen Transport. As blood nears the lungs, the carbon dioxide concentration decreases, causing an increase in pH. This increase in pH increases hemoglobin's affinity for oxygen through the Bohr effect, causing hemoglobin to pick up oxygen entering your blood from your lungs so it can transport it to your tissues.
Answer: Mutation can affect an organism by resulting to a change in the number and structure of chromosomes (chromosomal mutation). A typical example of this type of mutation is Down's syndrome where the individual contains 47 instead of 46 chromosomes.
Mutation can also result to a change in the nucleotide sequence of the DNA molecule in a particular region of a chromosome(Gene mutation) an example of genetic mutation is sickle cell anemia
Explanation:
Answer:
A. True
B. True
C. False
D. True
E. True
F. True
G. False
H. True
I. True
J. True
K. False
L. True
M. True
N. True
Explanation: A&B. the quadriceps are a group of muscles connecting through the knees and thighs.
C. Intramuscular injections are usually given in the gluteus maximus because they contain the largest muscle on the buttocks.
G.The semimembranosus is located in the pelvis.
I. Harmstring injuries occur during flexion because it involves bending.
K. Transverse abdominal muscles is the innermost muscles.
In the endoscopic sphincterotomy procedure, the patient will be a given a combination of meperidine, fentanyl, midazolam, or propofol. These knockout drugs relieve anxiety, brings unconsciousness, and stops pain. Therefore, the patient will not feel anything, not even pain, during the surgery.
