Organs, such as the stomach and the small and large intestines, are lined with smooth muscle tissue. these organs, due to the muscular contractions of their walls, involuntarily

True or false. mucous membranes secrete mucus that traps pathogens.

How will health most likely be affected if you follow the recommended guidelines for sleep rest and physical activity

Which statement describes the u.s organ donation system? a. about 200 lives are saved per year b. transplant recipients must pay for organs c. the waiting lists for organs are very long d. it is mandatory