Which of the following helps return blood to the heart?
A) Positive intrathoracic pressure B) Contracting skeletal muscles
C) Capillary action D) Valves in the arteries
B
You might also like to view...
The medical term for "pertaining to both sides" is:
A) unilateral B) bilateral C) trilateral D) quadrilateral
The renal threshold is the
a. maximum amount of a particular substance that can be excreted in the urine per unit of time. b. maximum amount of a particular substance that the tubular cells are capable of actively reabsorbing per unit of time. c. plasma concentration of a particular substance at which its Tm is reached and the substance first appears in the urine. d. maximum amount of waste products that can be concentrated in the urine per unit of time. e. maximum amount of water that can be osmotically absorbed across the tubules per unit of time.
The longitudinal muscle layer of the large intestine forms three distinct muscle bands called:
(a) sigmoid colon (b) teniae coli (c) haustrae (d) epiploic appendages
Most sensory input that ascends through the spinal cord and brainstem projects to the ________.
A. subthalamus B. pineal gland C. mammillary bodies D. thalamus E. hypothalamus