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THE  NEW   STUDENT'S   REFERENCE   WORK

6. THE HEART:

7. THE  LUNGS:

8. THE  BRAIN:

9. THE EYE:   643.

10. THE EAR:  572.

a. Auricles: chambers of the heart that receive blood 853.

b. Ventricles:   chambers of the heart that expel blood 853.

c. Partition:   separating the right and left cavities 853.

d. Valves:    which regulate the flow of the blood in the

heart 853.

e. Arteries: tubes which carry blood away from the heart

113.

f.  Veins:   tubes which carry blood toward the heart 853.

g. Capillaries:   which carry blood from veins to arteries

853.

h. Pulse:  distension of arteries by blood pressure 1560. i.  Valves in veins:  to prevent back flow of blood 853.

a. Trachea  or windpipe:    the   air   passage   through   the

throat 1603.

b. Bronchi:   the two branches of the windpipe 1603.

c. Bronchial tubes:    small   tubes   branching   through   the

lungs 1603.

d. Air sacs:   ends of tubes in lungs 1603.

a. Cerebrum:   the fore part of the brain 257.

b. Cerebellum:   the hind part of the brain 257.

c. Medulla Oblongata:   between brain and spinal cord 257.

a. Scleratic coat:   the tough outer coat which forms   the

cornea.

b. Choroid coat:   the   dark   middle coat which forms the

iris.

c. Retina:   the delicate inner coat, made up of cells, rods

and cones.

d. Vitreous humor:   transparent fluid in the main cavity

of the eyeball.

e. Aqueous humor:   transparent fluid filling the front cav-

ity of the eyeball.

f.  Crystalline  lens:   which   focuses   the   light   upon   the

retina.

g. Optic nerve:   which carries sensations to the brain.

a. Outer  ear:    the  part outside  the  head  and  the tube

leading inward.

b. Middle ear:   containing the hammer, the anvil and the

stirrup.

c. Inner ear:   containing the cochlea and the semicircular

canals.

d. Tympanic  membrane:    between the outer and middle

ear.

e. Eustachian tube: the air passage from throat to middle

ear.

11. THE TONGUE:   a muscular organ within the mouth 1922.

12. THE NOSE:   the external organ of the sense of smell 1362.

13. THE    SALIVARY GLANDS:

14  THE TEETH-

a- Parot'd: in front of each ear 1665.

b. Submaxillary:  under the lower jaw 1665.

c  Sublingual:   under the tongue 1665.

f a. Enamel:  the outside of teeth, hardest substance in the human body 1880.

b. Dentine:   a bony substance produced from the dermls

1880.

c. Pulp:   the living substance inside of teeth 1880.

2275