Cards in this guide (12)
What does the lymph system do
Produces white blood cells.
How are the nervous system and the endocrine system different
The endocrine system affects cells with certain receptors .
The nervous system can affect only nearby cells
How does natrual selection lead to evolution
Some species can gradually change into a new species.
What did Malthus think would limit the population size
Which gland stimulates the immune system
What are steroid hormones most similar to
Why do doctors check for swollen lymph nodes
Lymph nodes are the site of white blood cell production.
Which makes viral infections difficult to defeat
The immune system must attack the bodys own cells
Which is the first part of the immune system to attack an invader
Which glands or organs produces horomones that tend to decrease blood calicum levels
tyroid gland, paratyroid glands
What does the t cells and b cells do
t cells are killer cells
b cells are antibodies
What describes how a vaccine works
it makes the body create memory cells for future infections