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Midterm
| Question | Answer |
|---|---|
| Hematopoiesis | Process of blood cell production in red bone marrow. |
| Osteon | The structural unit of compact bone |
| Sliding Filament Theory | Explains how muscles contract when actin slides past myosin, shortening the sarcomere |
| membrane potential | electrical charge difference across a cell membrane due to ion distribution |
| what are three components of a synapse? | presynaptic neuron, synaptic cleft, and postsynaptic neuron |
| what are the five main functions of the skeletal system? | Support, Protection, Movement, Mineral storage, and blood cell production |
| what is the role of Schwann cells in the PNS? | Forms myelin sheath around axons to speed up nerve signal transmission |
| what is the primary function of the sodium-potassium pump in neurons? | Maintains resting membrane potential by pumping Na+ ions out and K+ ions into the cell |
| what are the four main chemical classes of neurotransmitters? | Acetylcholine, amino acids, monoamines, neuropeptides |
| what are 3 major structural classifications of joints? | synovial, cartilaginous, and fibrous |