What is peristalsis?
A. A process of fat emulsification in the small intestine.
B. Voluntary control of the rectal sphincters regulating defecation.
C. The transport of nutrients to the liver through the hepatic portal vein.
D. Loss of appetite, fatigue, dehydration, and nervous disorders.
E. Smooth muscle contractions that move food through the alimentary canal.
E. Smooth muscle contractions that move food through the alimentary canal.
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What is the path of urine from formation to excretion in the mammalian kidney?
A. collecting duct ? renal pelvis ? ureter ? urinary bladder ? urethra B. renal pelvis ? ureter ? urinary bladder ? urethra ? collecting duct C. ureter ? collecting duct ? renal pelvis ? urinary bladder ? urethra D. collecting duct ? ureter ? urinary bladder ? renal pelvis ? urethra E. urethra ? collecting duct ? renal pelvis ? ureter ? urinary bladder
Methanogens can live only in ________ environments.
A. microaerophilic B. aerobic C. anaerobic D. All of the choices are correct.
Describe the structure of the placenta. What parts are maternal and what parts are fetal?
What will be an ideal response?
The vestibular canal and the tympanic canal are filled with endolymph
____________________ Indicate whether the statement is true or false.