Mention if the following statements are true (T) or false (F)
(i) Axons of nerve cells are very long.
(ii) Dendrons bundled together form a nerve.
(iii) Cardiac muscles get tired soon.
(iv) Epithelial cells leave space in between.
(v) Perikaryon is the nucleus of a nerve cell.
(vi) Muscles of the iris of the eye are of voluntary type.
(vii) Cartilage has no blood vessels or the nerves in it.