Health EDU

Week Two

Physiology: Chapter 4

Explain the function of each of the following terms:

Neuron- basic structural unit of the nervous system- Draw and label a neuron

Dendrite

Receptor

Pre-Synaptic

Synapse/synaptic cleft

Post-synaptic

Neuron, cell body

Axon

Terminal

Terminal vesicles

Neurotransmitters

Reuptake

Metabolizing enzymes

Understanding how receptors function:

Agonist

Antagonist

CNS

Brain Stem

Cerebellum

Cerebral Cortex

RAS

Basal Ganglia

Hypothalamus

Limbic System

Hypothalamus

PNS

Somatic nervous system

Sensory information neurons-(afferent)

Motor neurons-(efferent) voluntary actions

Autonomic Nervous system (ANS)

Sympathetic

Parasympathetic

Match the terms in the left column to the short definitions in the right column:

Abstinence Experimental use Situational use Misuse/ Abuse Dependency

__________________ Obsessive or compulsive drug use __________________ Drug use in stressful circumstances _________________Drug use for curiosity or Peer pressure __________________Drug use causes problems __________________No drug use at all

Chapter 5 – How and why drugs work

Write a short definition in your own words for the following terms:

1. Threshold Dose

2. Effect/side effect

3. Safety Margin

4. Lethal Dose

5. Potency

6. Toxicity

7. Metabolize/ biotransformation

8. Half Life

9. Tolerance

10. Cross tolerance

11. Adaptive Process: Pharmacodynamic tolerance (Drug dependence)

12. Withdrawal

13. Synergistic (potentiate) Drug Interaction

14. Antagonistic Drug Interaction

15. Name 2 main symptoms of Physical Dependence

16. Name 2 main symptoms of Psychological Dependence

Method of Description Onset

Administration (what happens ) (how fast)

oral
snorting
intraveneous
smoking

17. Elimination and Metabolism:

All drugs are metabolized (broken down) by the _____________(organ of the body).

18. Most metabolites are excreted out of the body through _______________.