The vessels merging together to form the SVC are the _________________________.
Fill in the blank(s) with the appropriate word(s).
brachiocephalic veins
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A __________ heterotherm can retain heat in certain parts of the body
Fill in the blank with the correct word.
Match the cell of adaptive immunity with its function.A. Quick and responsive to antigen, remembers previous exposureB. After activation, differentiates to become plasma cell or memory B cellC. Produces antibodiesD. Destroys cells by lysis or by production of cytokinesE. Activates B and effector T cellsPlasma cell
Fill in the blank(s) with the appropriate word(s).
In a(n) ________ reflex, a sensory neuron synapses directly on a motor neuron
A) sensory B) motor C) polysynaptic D) monosynaptic E) integrative
Sensory neurons that are normally inactive but can become active for a short time are called ________
A) phasic receptors B) tonic receptors C) myelinated D) proprioceptors E) nociceptors