The skin pigment that provides protection from ultraviolet radiation is ________, which is produced by ________.
A. hemoglobin; blood cells
B. melanin; melanocytes
C. carotene; hypodermal cells
D. melanin; dermal cells
Answer: B
Anatomy & Physiology
You might also like to view...
Which muscle lies deep to the gastrocnemius?
A) tibialis anterior B) fibularis longus C) extensor digitorum longus D) soleus
Anatomy & Physiology
An infection results when pathogens _____.
A) enter a tissue area B) enter the blood C) grow and multiply D) grow and cause damage
Anatomy & Physiology
A 65-year-old man has chronic renal failure. What are the expected changes in his serum Ca++, Pi, and calcitriol levels? (Note: Changes are those expected compared with an individual with normal renal function.)
Serum [Ca++] Serum [Pi] Calcitriol level A. ? ? ? B. ? ? ? C. ? ? ? D. ? ? ? E. ? ? ?
Anatomy & Physiology
Identify the nucleic acid
A) oxidase B) cholesterol C) glucose D) DNA E) triglyceride
Anatomy & Physiology