Which organ system includes the spleen, lymph nodes, and thymus?
a. circulatory system
b. endocrine system
c. nervous system
d. digestive system
e. lymphatic system
E
You might also like to view...
The outside of a neuron is positively charged at resting potential. Why don't negative ions exit from the cell to normalize charge across the membrane?
A. The positive charge outside the cell repels negative ions. B. There are no negative ions inside the cell. C. All of the chloride ions are already outside the cell. D. The negative charge inside the cell is carried by large proteins that cannot diffuse through the membrane.
__________ immunity specifically targets billions of different antigens. Fill in the blank(s) with the appropriate word(s)
What is the passive movement of water along a concentration gradient?
a. osmosis b. cotransport c. plasmolysis d. simple diffusion e. facilitated diffusion
Bacteria in the genus Cytophaga are capable of digesting a wide range of complex carbohydrates and are important for degrading raw sewage.
Answer the following statement true (T) or false (F)