Arrange the following sentences to describe the sequence of events that can occur during skeletal muscle contraction 1.Sodium channels open and sodium flows in. 2.Impulse reaches the axon's terminal. 3.ACh binds to receptors on the muscle cell membrane. 4.Synaptic vesicles fuse with neuron's membrane and release ACh via exocytosis. 5.If enough sodium moves in to the muscle cell, an impulse (action potential) develops.

Match the following terms and definitions. 1. species that are adapted to live in equilibrium at carrying capacity population density 2. population growth that reaches equilibrium and carrying capacity population 3. death rate mortality 4. birth rate k-selected 5. a group of interacting individuals of the same species within the same geographic area natality 6. the number of organisms living in a particular area logistic growth