WCU PHYS 261 WEEK 1 QUIZ FINAL PAPER
2026 QUESTIONS WITH SOLUTIONS
ALREADY GRADED A+
⩥ Homeostasis. Answer: Maintaining a stable internal environment
⩥ Placebo. Answer: A drug treatment that is expected to have no
pharmaceutical effect on humans/animals
⩥ Cations. Answer: positively charged ions
⩥ Isotopes. Answer: two or more forms of the same element that contain
equal numbers of protons but different numbers of neutrons in their
nuclei. differ in relative atomic mass but not in chemical properties.
⩥ Active cellular transport. Answer: is the movement of molecules
across a membrane from a region of their lower concentration to a
region of their higher concentration—against the concentration gradient.
Requires cellular energy.
⩥ Absolute Refractory period. Answer: during which a second action
potential cannot be triggered no matter how large the stimulus
, ⩥ Isotonic muscle contraction. Answer: Creates force and moves the
load EX) lifting weights
⩥ isometric muscle contraction. Answer: creates force without moving a
load Ex) wall planks
⩥ Intercalated disc. Answer: Located in the heart, allows communication
between the different heart cells for uniformed contraction. Gap junction
of the heart
⩥ Myocardial infraction. Answer: when blood flow to the heart muscle
is abruptly cut off, causing tissue damage. This is usually the result of a
blockage in one or more of the coronary arteries.
⩥ Isovolumic ventricular systole. Answer: an event occurring in early
systole during which the ventricles contract with no corresponding
volume change
⩥ Cardiac output. Answer: The amount of blood pumped per ventricle
per unit
CO= HR x SV
⩥ Angiogenesis. Answer: formation of new blood vessels, especially
after birth.
Example: wound healing and tumors
2026 QUESTIONS WITH SOLUTIONS
ALREADY GRADED A+
⩥ Homeostasis. Answer: Maintaining a stable internal environment
⩥ Placebo. Answer: A drug treatment that is expected to have no
pharmaceutical effect on humans/animals
⩥ Cations. Answer: positively charged ions
⩥ Isotopes. Answer: two or more forms of the same element that contain
equal numbers of protons but different numbers of neutrons in their
nuclei. differ in relative atomic mass but not in chemical properties.
⩥ Active cellular transport. Answer: is the movement of molecules
across a membrane from a region of their lower concentration to a
region of their higher concentration—against the concentration gradient.
Requires cellular energy.
⩥ Absolute Refractory period. Answer: during which a second action
potential cannot be triggered no matter how large the stimulus
, ⩥ Isotonic muscle contraction. Answer: Creates force and moves the
load EX) lifting weights
⩥ isometric muscle contraction. Answer: creates force without moving a
load Ex) wall planks
⩥ Intercalated disc. Answer: Located in the heart, allows communication
between the different heart cells for uniformed contraction. Gap junction
of the heart
⩥ Myocardial infraction. Answer: when blood flow to the heart muscle
is abruptly cut off, causing tissue damage. This is usually the result of a
blockage in one or more of the coronary arteries.
⩥ Isovolumic ventricular systole. Answer: an event occurring in early
systole during which the ventricles contract with no corresponding
volume change
⩥ Cardiac output. Answer: The amount of blood pumped per ventricle
per unit
CO= HR x SV
⩥ Angiogenesis. Answer: formation of new blood vessels, especially
after birth.
Example: wound healing and tumors
