When does the heart begin beating?
A. A few hours after conception
B. Week 3 of development
C. Week 10 of development
D. Week 17 of development
E. Week 20 of development
B. Week 3 of development
You might also like to view...
The simplest level of CNS function is the
A. cerebral reflex. B. ability to talk. C. spinal reflex. D. ability to work.
Arrange the following structures in order from the small intestine to the rectum. (1) ascending colon (2) descending colon (3) sigmoid colon (4) transverse colon
A. 1, 2, 3, 4 B. 1, 4, 2, 3 C. 2, 3, 1, 4 D. 2, 4, 1, 3 E. 1, 4, 3, 2
This is the site of fat storage in the skin
A. epidermis B. papillary layer C. reticular layer D. hypodermis E. stretch marks
Which of the following is known as "center-seeking" force?
A. momentum B. acceleration C. centrifugal force D. centripetal force