Into which layer of the skin do you think tattoo ink is injected? Explain why
What will be an ideal response?
The ink from a tattoo must be injected into the dermis. The cells of the epidermis are sloughed every 40 to 50 days, so a tattoo injected here would hardly last more than a month. Cells that begin life in the stratum basale will travel through all the strata of the epidermis until they reach stratum corneum. These cells are shed and replaced by cells undergoing mitosis in deeper layers. The ink injected into the dermis for a tattoo would remain in this layer.
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Which wave in an electrocardiogram represents repolarization of the ventricles?
a) R wave b) T wave c) S wave d) P wave e) Q wave
Answer the following statements true (T) or false (F)
1. Luteinizing hormone is also called the ovulating hormone. 2. Males also produce luteinizing hormone. 3. ADH causes water to be excreted in the urine. 4. A person who was working hard on a hot day and perspiring freely would probably have a fairly high concentration of ADH in his blood. 5. Oxytocin stimulates contraction of the pregnant uterus.
A cancerous condition involving uncontrolled proliferation of WBCs is known as:
a. neutrophilia b. lymphoma c. sickle cell anemia d. malaria e. leukemia
Which artery is a branch of the celiac trunk?
A. Right gastric artery B. Right gastro-omental artery C. Left gastro-omental artery D. Left gastric artery E. Superior mesenteric artery