The unidirectional flow of blood in venules and medium-sized veins is maintained by:
pressure from the left ventricle
the muscular walls of the veins
arterial pressure
the presence of valves
all of the choices are correct
the presence of valves
Anatomy & Physiology
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Which hormones use second-messenger systems?
a. proteins b. catecholamines c. steroids d. thyroid hormone e. Both c and d
Anatomy & Physiology
Describe the structural and functional classification of syndesmoses
What will be an ideal response?
Anatomy & Physiology
A taxi driver picked up a fare in a heavy rainstorm. Which reflex was activated when both men unexpectedly heard a loud clap of thunder?
A) Vestibular reflex B) Startle reflex C) Patellar tendon reflex D) Withdrawal reflex
Anatomy & Physiology
In general, a large rough projection is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology