Tamil Nadu Board Solutions for Exercise 5: Evaluation

 Examine the diagram of the two cell types A and B given below and select the correct option.

The abundant intracellular cation is

When the potential across the axon membrane is more negative than the normal resting potential, the neuron is said to be in a state of

Why is the blind spot called so?

Sam’s optometrist tells him that his intraocular pressure is high. What is this condition called and which fluid does it involve?

The action potential occurs in response to a threshold stimulus, but not at sub threshold stimuli. What is the name of the principle involved?

Differenciate between rod and cone cells.

Describe the sensory receptors present in the skin.