KEY - Bio416K
Physiology and Functional Anatomy
Lecture Exam 1
Which of the following is the most correct sequence for a homeostatic control pathway?
stimulus, effector, efferent path, integrating center, negative feedback, response
response, stimulus, effector, efferent path, integrating center, afferent path, receptor
receptor, stimulus, integrating center, efferent path, receptor, response
stimulus, receptor, efferent path, integrating center, afferent path, effector, response
stimulus, receptor, afferent path, integrating center, efferent path, effector, response
An intravenous (IV) 10 % glucose in 0.45% NaCl solution is normally:
isosmotic and hypotonic
hyperosmotic and hypertonic
isosmotic and hypertonic.
hyperosmotic and hypotonic.
hyperosmotic and isotonic.
The cell membrane consists of a phospholipid bilayer:
arranged with the hydrophobic ends to the extracellular or intracellular fluid
arranged with the hydrophilic ends to the extracellular or intracellular fluid
totally insoluble in water, to protect the contents of the cell
that readily dissolves in water
that is a static structure and never changes its arrangement
A layer of glycoproteins and a network of fine protein filaments that prevents the
movement of proteins and other large molecules from the connective tissue to the
epithelium describes a ___________________________.
basement membrane (basal lamina)
Oxytocin is a peptide hormone (chemical signal) that causes the smooth muscle of the
uterus to contract, but it has no effect on the smooth muscle cells of the small intestine.
This difference in responsiveness likely exists because:
uterine smooth muscle cells do not contain a second messenger
intestinal smooth muscle cells do not contain a second messenger
uterine smooth muscle cells do not contain specific receptors for
intestinal smooth muscle cells do not contain specific receptors
oxytocin can move through blood to the uterus but not to the small