The fluid-filled sacs that provide extra support and cushioning in joints are known as a:

Which of the following filaments is a regulatory filament that blocks the binding sites on actin for myosin, and must bind calcium before it moves?

Which type of neuron has only one axon and one dendrite?

Which connective tissue covering can be found around a bundle of muscle cells – a fascicle?

Which of the following statements accurately describes the role of ATP in a muscle contraction?

Which of the following neuroglia cells is found only in the peripheral nervous system (PNS)?

Which of the following synapses involves the axon of the presynaptic neuron interacting with the dendrite of the postsynaptic neuron?

Which of the following correctly lists the events in the repair of a neuron process? Wallerian degeneration Regeneration tube formation Growth of axon Connection to target cell

Which of the following terms describes the process of propagating an action potential by having it jump from node of Ranvier-to-Node of Ranvier, and is used by myelinated neurons?

During muscle contractions, myosin crossbridges bind to active sites on: