The renal pelvis is indicated by ________

The parasympathetic neurons of the autonomic nervous system decrease the rate at which the pacemaker cells of the sinoatrial node drive the heart rate by secreting the neurotransmitter ________.

Fill in the blank(s) with the appropriate word(s).

Where is the greatest concentration of cones located?

A.   In the optic disc B.   In the ora serrata C.   In the fovea centralis D.   In the posterior retina E.   In the optic nerve

________ is found in the right hypochondriac region

A) The liver B) The appendix C) The right lung D) Most of the small intestine

This body system consists of the brain, spinal cord, and nerves and maintains homeostasis by generating electrical signals

A) cardiovascular B) nervous C) endocrine D) urinary