Topics: Lymphatic System Quiz
______________________________ are present in the lymph nodes
A. macrophages and lymphocytes
B. epithelial cells and cerebrospinal fluid
C. ventricles and vesicles
D. red and yellow bone marrow
Select your answer:

Topics:
Nervous System: Diseases/Problems/Illnesses Vascular Surgery Introduction to Pharmacology Nutrients in Food Healthy Foundations Biochemistry Vocabulary Physical Urinary System Human Circulatory System Hematology Body System Interactions Diet Multicellular Organisms: Organisation Biodiversity Conservation Chronic DiseasesOther quiz:
Mutation & Genetic Engineering › ViewWhat is a mutation?
A. No change in DNA
B. Any change in DNA
C. No change in RNA
Endocrine System › View
Progesterone 孕酮 is secreted by
A. Testis 睾丸
B. Pancreas 胰腺
C. Ovary 卵巢
D. The anterior lobe of the pituitary gland 脑垂体前叶