Action Potentials
What is the most metabolically active part of a neuron?
Cell Body
What is diffusion?
the random movement of molecules driven by kinetic energy.
Phagocytosis is the process of?
Cell Eating
molecules or particles into the cell
Bacteria or Debris
What is a membrane potential?
an electrical gradient caused by separation of charges across a cell membrane
A chondrocyte is?
a mature cell that lives in lacunae of cartilage
A muscle cell experiencing resting membrane potentialis:
polarized
Facilitated diffusion requires the use of ___ energy.
ATP
Osmosis is the movement of?
Water
Inside the cell, theirs a high concentration of?
K+ (potassium)
Where would you find elastic cartilage?
The Na+/K+ pump helps a muscle cell maintain a state of:
Resting Membrane Potential
What are the two types of secondary active transport?
Symport and Antiport
What is a hypertonic solution?
Solution or ECF has higher concentration than the cell
The role of the Na+/K+ pump for an electrical gradient is?
to maintain Na+ and K+ ion concentration
The periosteum ____
lines the external surfaces of bones
When voltage-gated sodium ion channels are inactivated, the neuron is_________________.
in the absolute refractory period
Primary active transport uses ATP and goes ____ concentration gradient?
Against
What is a hypotonic solution?
solution or ECF has lower concentration than the cell
The electrical gradient of Na+ is?
into the cell because of the positive attraction
An osteocyte ____
maintains bone tissues and lives in the lacunae
The type of action potential propagation in which action potentials are only generated at myelin sheath gaps (nodes of Ranvier) is called __________.
Saltatory Conduction
3 Na+ goes out and 2 K+ goes in. What is this an example of?
Na/K+ Pump or Primary Active Transport
How is solute measured?
in molarity or osmolarity
The electrochemical gradient of K+ is?
out of the cell
What bones does intramembranous ossification produce?
produces flat bones of the skull, some facial bones, the mandible, and central portion of the clavicle.