Examlex
The pituitary gland secretes melatonin, which is involved in regulating the sleep-wake cycle.
Protein Molecules
Large biomolecules composed of one or more chains of amino acids that perform a vast array of functions within organisms.
Adenine Base
A nitrogenous base, one of the four constituent bases of DNA and RNA, paired with thymine in DNA and uracil in RNA.
Phosphate Groups
Functional groups consisting of a phosphorus atom bonded to four oxygen atoms, critical components in the energy transfer within cells and in the structure of nucleic acids.
Ribose Sugar
A five-carbon sugar that is a fundamental component of RNA (ribonucleic acid).
Q24: The second neuron in an autonomic pathway
Q35: The superior mesenteric ganglion of the sympathetic
Q71: Each skeletal muscle is composed of _,
Q103: These figures show the intrinsic muscles of
Q105: The somatic nervous system and the autonomic
Q115: _ is the natural, temporary absence of
Q123: The main way acetylcholine is cleared from
Q128: Acetylcholine exerts its effect by<br>A) stimulating the
Q161: Catecholamines are a subtype of _ neurotransmitter.<br>A)
Q183: Which muscle forms the traditional "six-pack" of