Biology, 20.10.2020 21:01, kyliefetters11
The atria are the “upper”chambers of the human heart. What are “lower” chambers of the human heart called?
Answers: 3
Biology, 21.06.2019 14:00, madleneinejessup
According to the law of conservation of energy, energy can neither be created nor destroyed. if this is true, why is there less energy in the top of the energy pyramid than there is in the bottom of the energy pyramid?
Answers: 1
Biology, 22.06.2019 09:00, 001234567891011
Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm
Answers: 1
Biology, 22.06.2019 13:20, crazymadhatter0
Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).
Answers: 2
The atria are the “upper”chambers of the human heart. What are “lower” chambers of the human heart c...
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