
★ Circulation and Excretion Quiz
What organism has blood that flows directly form the respiratory organs to the body tissues without returning to the heart first?
A. amphibians
B. fish
C. humans
Topics:
Beneath the Skin Endocrine System Thyroid Gland Physical Activity Renal Pharmacology Blood Pressure and Blood Vessels Muscle Histology Illness and Symptoms Shoulder SSTI and Bone Infections Thyroid Personal Growth Plan Tenses Factors Affecting Health Human PhysiologyOther quiz: Endocrine System
Which hormone is produced in the testes
A. Insulin
B. Adrenalin
C. Testosterone
D. Thyroxine