What type of chemical bond is pictured in Figure 2.3?
C
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A(n) ________ binds to neighboring, uninfected cells and stimulates them to produce chemicals that may protect these cells from viruses.
A. complement B. interferon C. interleukin D. lysis
When an impulse arrives at the knob of the motor neuron, calcium
A. enters through active transport pumps and triggers the release of transmitter. B. enters through voltage-gated channels and triggers the release of transmitter. C. is released from synaptic vesicles. D. exits through voltage-gated channels and triggers transmitter release. E. exits through active transport pumps and brings transmitter with it.
The scalenes have their origin on the
A) transverse and costal processes of cervical vertebrae. B) inferior border of the previous rib. C) superior border of the next rib. D) cartilages of the ribs. E) thoracodorsal fascia and iliac crest.
Which of the following muscles would be considered an antagonist to the rectus femoris?
A. sartorius B. biceps femoris C. vastus intermedius D. gracilis E. vastus lateralis