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Define: Phospholipid bilayer
The majority of a cell’s plasma membrane made of two layers of lipids called phospholipids.
Define: Diffusion
Passive movement of substances from high concentration to low concentration.
What can lipids travel through what part of the plasma membrane?
Through the phospholipid bilayer.
Can peptides (proteins) travel directly through the plasma membrane?
No, peptides which are small proteins cannot travel through the plasma membrane.
The Cervical region is called the ___________.
neck
Cranial cavity
The skull bones enclose this area that contains the brain and other structures.
Abdominal Cavity
Upper portion of the abdominopelvic cavity. The largest of the two cavities.
Pelvic Cavity
Lowest portion of the abdominopelvic cavity. The smallest of the two cavities.
Anterior
Towards the front of the body. Example anterior pituitary
Posterior
Towards the back of the body Example posterior pituitary
Neuron
Cell capable of conducting electrical impulse and stores chemical neurotransmitters that are released from the axon terminal. Used for communication.
Glycogen
Storage form of glucose.
The space between the tissues and blood vessels. Also called tissue space.
Interstitium
Interstitial fluid
A type of ECF (extracellular fluid) found in the tissue space.
A network of blood vessels that transport substances, such as hormones is called the ______________.
Bloodstream
Neurotransmitter
A chemical released from a neuron by exocytosis.
Stimulus
Something that causes a reaction.
What creates electrical signals in the neuron?
Current created by the movement of sodium ions (depolarization). Example: Action potentials