Answer Happy

Which statement regarding vascular smooth muscle cells is NOT true? O If present in the tunica media of any blood vessel, they are oriented circularly. O They are especially abundant in the tunica intima of some mid-size blood vessels. They produce reticular and elastic fibers in the tunica media of large elastic arteries. O They may be present as longitudinal bundles in the tunica adventitia of large veins.
Each of the following statements concerning the erythrocytes is true, EXCEPT: are cell fragments. contain hemoglobin. are 7-8 microm biconcave discs. O lack nuclei and organelles. contain cytoskeletal microfilaments.