The ligamentum arteriosus is the remains of the:
a. umbilical artery
b. umbilical vein
c. pulmonary trunk
d. ductus arteriosus
Answer: d. ductus arteriosus
You might also like to view...
The ________ provides the principal link between the nervous and endocrine systems
A) cerebellum B) medulla oblongata C) cerebrum D) pons E) hypothalamus
Waves of muscular contractions that propel the contents of the digestive tract are called
A) segmentation. B) pendular movements. C) peristalsis. D) churning movements. E) mastication.
What is the superficial fibrous covering of the heart that is composed partly of dense irregular connective tissue?
A. Myocardium B. Endocardium C. Epicardium D. Parietal pericardium E. Visceral pericardium
Which of the following structures serves to store sperm?
A. Prostate gland B. Seminiferous tubules C. Epididymis D. Spermatic cord E. Seminal vesicles