List the functions of the skeletal muscles.
What will be an ideal response?
1. Support of the body.
2. Movement of the bones and other body structures.
3. Maintenance of fluids in the cardiovascular and lymphatic system.
4. Maintenance of a constant body temperature.
5. Protection of the internal organs and the stabilization of joints.
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Macroscopic fossils of organisms thought to be animals first appeared in rocks deposited around _____ million years ago
A. 575 B. 542 C. 420 D. 360 E. 100
The membrane potential of a neuron is defined as the ____
a. measured capacity of a neuron to create an electrical impulse b. voltage in the neuron plasma membrane c. threshold potential of a neuron d. the electric gradient across a neuron’s plasma membrane e. amount of voltage it takes to stimulate a neuron to fire
The distal tubules deliver urine to the renal pelvis.
a. true b. false
During cellular respiration, electrons move through a series of electron acceptor molecules. Which of the following is a TRUE statement about this process?
A) The electrons gain energy as they move from one electron acceptor to another. B) Oxygen is eventually reduced by the electrons to form water. C) The electrons release large amounts of energy each time they are transferred from one electron acceptor to another. D) Glucose is eventually reduced by the electrons to form water.