__________-gated ion channels open or close when a molecule such as a hormone or neurotransmitter binds to them.
Fill in the blank(s) with the appropriate word(s).
Ligand or Chemically
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If a fish becomes tangled in a net, it should be cut free
Indicate whether the statement is true or false
Match the artery with the appropriate description.A. Supplies blood to the diaphragmB. Supplies blood to the esophagusC. Supplies blood to the thoracic wallD. Supplies blood to the pancreas and small intestineE. Supplies blood to the stomach, liver, and spleenSuperior phrenic artery
Fill in the blank(s) with the appropriate word(s).
Which of the following pairs of terms is mismatched?
A. Cilia - basal bodies B. Golgi apparatus - cisternae C. Lysosomes - hydrolytic enzymes D. Mitochondria - cristae E. Smooth endoplasmic reticulum - chromatin
Which of the following is NOT true about astrocytes?
A. They can prevent toxic substances from entering brain tissue. B. They can wall off an injury site to prevent spread of inflammation. C. They can aid in the regeneration of injured neurons. D. They can release chemicals that promote formation of synapses.