★ Nervous & Endocrine Systems Quiz
Which statement best describes the chemical substances secreted by endocrine glands?
A. They are transmitted by neurons.
B. They are secreted into cells.
C. They are carried by the blood.
D. They are found only in vertebrates.
Select your answer:
Topics:
Musculoskeletal Diseases Diseases of The Nervous System World Health Day Leaves Human Excretory System Stress Human Anatomy and Physiology - Types of Tissues Joints & Movement Carbohydrates Stimuli and Responses in Humans Skin Growth Movement Oxygenation First Aid Bleeding Nutrition & WellnessOther quiz:
Embryology › ViewMyrmecophily is pollination by
A. Ants
B. Bats
C. Birds
D. Snails
Body System › View
A woman running in a marathon requires a constant supply of oxygen to her muscles.Which cells carry oxygen to muscle tissue?
A. nerve cells
B. lung cells
C. red blood cells
D. artery cells