★ Respiration, Immune System, Blood Cells Quiz
Why do arteries have a thick muscle layer?
A. To provide energy for the blood vessel.
B. To prevent the blood flowing backwards.
C. To help withstand the high pressure blood, also to contract to control blood flow.
Select your answer:
Topics:
Living Organisms & Animal Behaviors Environmental Biotechnology Entomology Dermatology Muscle Origin, Insertion, and Function Mutations Endodontic Surgery Characteristics of Life & Viruses Endocrine System Terms Cardiovascular Nursing Microbio (Viruses) Hematology Acute Leukemias Toxicology Physical Fitness Components Herd ImmunityOther quiz:
Nutrition › ViewA good source of Calcium would be
A. Milk & Dairy Products
B. Cereals, Grains, Bread
C. Fruits & Vegetables
D. Red Meat, Chicken
Body Systems › View
Plants have many cells that have specialised functions and work together to keep the plant alive. This means that plant are ______.
A. Vascular
B. Nonvascular
C. Unicellular
D. Multicellular