Why do doctors check for swollen lymph nodes?
A. Lymph nodes are the site of white blood cell production.
B. Memory cells are stored in the lymph nodes.

c. It is impossible to immunize the lymph nodes.
D. Bacteria and viruses mostly attack the lymph nodes.

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.