Answer:
The correct answer is B:
HR = 80% of age-predicted maximum is NOT a reason to stop maximal GXT.
Explanation:
<u>Maximal graded exercise test</u> allows physicians to evaluate patients ability to perform cardiovascular exercise (functional capacity), an also detect if there are any zones of ischemia in the muscle heart due to arteriosclerosis.
To do so, the patient would be asked to walk on a treadmill and speed and slope of the treadmill will be increased gradually during the test. EKG, heart rate, and blood pressure will be recorded and compared afterwards.
The heart rate target to make a proper evaluation is 85% of the maximal predicted heart rate.
Answer:The amino acid sequence in the tips of the "Y" varies greatly among different antibodies. This variable region, composed of 110-130 amino acids, give the antibody its specificity for binding antigen. ... The constant region determines the mechanism used to destroy antigen.
Explanation:
Answer:
0,250 mL of cefazolin (Ancef) are administered.
Explanation:
In order to administer 250mg of cefazolin (Ancef) from a vial which concentration is 1gm/mL the following conversion must be applied:
1gm = 1000 mg
Therefore, using the rule of three, (250 mg x 1 mL) / 1000 mg = 0,250 mL.
Answer:
The correct answer is e. all of the above.
Explanation:
Nurse cells are also called sertoli cells and are located in the seminiferous tubules in the testes. They provide nourishment to the growing sperms by providing nutrients from surrounding cells.
During the development of of sperms they become genetically different from other cells so nurse cells form blood testes barrier to protect them from immune cells.
Nurse cells concentrate the testosterone in seminiferous tubules which is necessary for proper development of sperms. They also secrete inhibin which stop FSH secretion from anterior pituitary therefore regulate the spermatogenesis.
The epidermis includes five main layers: the stratum corneum, stratum lucidium, stratum granulosum, stratum spinosum, and stratum germinativum.
