in the human circulatory system veins have valves but arteries do not what would be the most likely result if veins did not have valves

What feature of alcohol fermentation makes it more suitable for the baking process than lactic acid fermentation? A. Alcohol fermentation is a faster process than lactic acid fermentation. B.

The humerus articulates distally with which bone at the trochlea

What part of the male urogenital tract is shared by the urinary and reproductive systems? the prostate gland the seminal vesicles the vas deferens the urethra

4. Where on an animal would you look for the popliteal lymph node?

Which of these is not considered to be an accessory synovial structure? a. synovial membrane b. menisci c. bursae d. fat pads e. tendons?

1) which structure regulates breathing rate in humans? A) diaphragm B) lungs C) hypothalamus D) medulla 2) the first forms of life on earth A) appeared about 10,000 years ago B) could easily maintain a stable internal environment C) were

What is a chemical transmitter?

How do groups of organs assemble and work together to make an organism? A. they form other organs B. they form group of cells C. They form organ systems D. They form an ecosystem

What substance is analogous to a factory manager?

What can you conclude about fossil by looking at the layers of rock?