Which statement below is correct?
a. after death blood settles in the lowest parts of the body. the blood coagulates and flows out of those parts of the body even if it is later moved. these purple marks are lividity.
b. after death blood settles in the highest parts of the body. the blood coagulates and flows out of those parts of the body even if it is later moved. these purple marks are lividity.
c. after death blood settles in the lowest parts of the body. the blood coagulates and remains in those parts of the body even if it is later moved. these purple marks are lividity.
d. after death blood settles in the highest parts of the body. the blood coagulates and remains in those parts of the body even if it is later moved. these purple marks are lividity.

Which of the following was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

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).