Answer:
The answer is D opening and closing of the heart valves
Explanation:
The closure of both atrial and ventricular heart valves are responsible for normal heart sounds, it should be said that blood circulation must be laminal, without turbulence or colliding with the walls of the heart.
Answer:
C) substitutions that reduce the affinity of hemoglobin for oxygen
Explanation:
Heinz bodies are inclusions in the eritrocite, filled by denaturalized globin (protein part of the hemoglobin). Hemoglobin is formed by 4 globin subunits (2 alpha chains and 2 beta chains) plus a heme group. The latter, is responsible for oxygen binding.
The denaturalization of the globin is caused by substitutions that do not allow the protein to fold properly and bind the heme group accordingly. This is the cause of the Heinz bodies in the eritrocite. Therefore, this is a structural problem that impedes the protein to fold into a functional protein and has nothing to do with hemoglobin having less affinity for oxygen. In the last mentioned case, the protein is still functional but poorly binds oxygen, hence, does not for Heinz bodies.
Answer:
The subjective symptoms that have led Jessica and Mike to presume she is pregnant are:
The missing of her period.
Clothes feeling tighter.
Breast tenderness.
Being nauseous in the morning.
Eating all the time.
Frequently going to the bathroom.
Explanation:
Amenorrhea, weight gaining, breast tenderness, morning sickness, increase in appetite and an increase in urinary frequency are subjective symptoms of pregnancy. The reason for this is that they are only noticeable by the person that experiences them or by someone that is keeping a close look at that person, like Jessica's husband. Besides, the symptoms mentioned above are subjective because there can be other things that cause them, such as premenstrual symptoms.
Answer:
The answer is B, C, E
Explanation:
Older patients tend to be people with multiple pathologies, which forces them to be taking different medications for each of them, this polypharmacy can lead to an adverse alteration in the senile patient. knowing that they are older adults they will have a certain degree of renal dysfunction which will not allow the elimination of the metabolites of these medications.
