NS vs endocrine system

Question 1

Endocrine system

• nature of the message
• transmission of the message
• cells affected
• specificity of message (SU)
• speed of action
• duration of action

Answer 1

• nature of the message = hormones
• transmission = by the bloodstream
• cells affected= all body cells
• specificity of the message (SU) = may be general and widespread
• speed of action = slower > seconds to days
• duration of action = longer-lasting > may continue long after the stimulus has stopped

Question 2

Nervous system

• nature of the message
• transmission of the message
• cells affected
• specificity of message (SU)
• speed of action
• duration of action

Answer 2

• nature of the message = electrical impulses and neurotransmitters
• transmission = along the membrane of neurons
• cells affected = muscle and gland cells
• specificity of the message (SU) = usually local and specific
• speed of action = rapid > within miliseconds
• duration of action = brief > stops quickly when stimulus stops