A hormone whose production is associated with seasonal fluctuations in day length is ________.
Fill in the blank(s) with the appropriate word(s).
melatonin
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Control of the neuromuscular junction in this new invertebrate is found to involve dual innervation, where one motor neuron secretes an excitatory neurotransmitter and another secretes an inhibitory neurotransmitter onto the muscle. How does this compare to the human neuromuscular junction? Propose three different types of inhibitory receptors/channels that would produce inhibition of the
invertebrate muscle, specifying ion and direction of ion flow. For each ion, calculate the equilibrium potential. What similarity do you notice in the equilibrium potentials of the ions involved, and how is that significant? How may inhibition be accomplished in human muscle? What will be an ideal response?
What does label F represent?
A) complement binding site
B) antigen binding site
C) antigenic determinant sites
D) macrophage binding site
E) antibodies
A three-year-old throws a tantrum at the supermarket. She holds her breath until her face turns blue, and she passes out. Then, she immediately starts normal breathing again. What accounts for this resumption of breathing?
a.) Stimulation of afferents from stretch receptors of lungs b.) Activation of respiratory centers in the cerebral cortex c.) Reciprocal inhibition of the phrenic nerve d.) Loss of influence from the cerebral cortex
Explain how the structure of the alveoli facilitate their function in gas exchange.
What will be an ideal response?