
Which of these would be an example of an internal stimulus?
A. the bright flash of a camera
B. cramps in the leg muscles
C. an alarm clock activating
D. vibrations in the floor
Select your answer:

Topics:
ICU Eye and Ear Erythrocyte Disorders Neuroanatomy of CNS First Aid Bleeding Skull Stem Cells & Cell Differentiation The Nervous System Human Organs Non-infectious Disease Skeletal System Homeostatic Imbalances Physical and Sensory Impairment Enzymes Life Cycle - Bee HNBS InternOther quiz:
Heredity › ViewJuan’s dog, Luna, was hit by a car. Fortunately, she lived and is healthy! But she is now missing a leg. Having only three legs is a(n)
A. inherited trait.
B. learned behavior.
C. instinct.
D. acquired trait.
Microbiology › View
Superantigens are
A. body tissues that the immune system mistakes as foreign.
B. bacterial toxins that activate T cells at a 100 times greater rate than other antigens.
C. cell markers found in some member of a species but not in other members.
D. antigens that evoke allergic reactions.