A chemical substance that is released into the blood by a gland and that controls or affects processes in other glands or body systems is a(n):
A) enzyme.
B) hormone.
C) leukotriene.
D) neurotransmitter.
Question 2
Which of the following statements made by an EMT shows he correctly understands capillary refill?
A) Capillary refill is a reliable sign of perfusion in adults, but not as reliable in infants and children.
B) Red flushed skin in the adult is a normal finding when assessing capillary refill.
C) A capillary refill of 4 or more seconds in any age patient indicates that he or she is well oxygenated.
D) For a capillary refill test to be normal for a child, it must be assessed at room temperature and be less than 2 seconds.
Illustration of an embolus floating in an artery. The embolus will become lodged in a blood vessel t
Breast cancer. Notice the tumor growing within a lactiferous gland, which occurs in infiltrating duc
The cells in blood; A, red blood cells (erythrocytes); B, platelets (thrombocytes); C, white blood c
Demonstrating the use of venipuncture equipment. Using a syringe to draw blood.
Apply the substance to the abdomen in a clockwise motion.
Blood Alcohol Concentration in men and women