Freiburger historische Bestände - digital

EXPLANATION

OF

PLATE 39.

Fig 1,

meatus auditor, extern

m. pterygoideus externus

m. ptejygoideus intern us
part of m. tempor. having been inserted on
inner side of the mandible

mucous membrane of cheek

part of m. tempor. having been inserted on
anterior margin of ramus mandibular

Fig. 1. Posterior part of the right half of the head
of the Elephant no. 2. The facial muscles and the
masseter etc. have been removed. Most of the zvsfoma
has also been cut away, which is also the case with
the proc. coronoideus and adjoining parts of the mandible,
which are pared out of the m. temporalis, which has
been attached to them; the muscle itself is represented
intact (nothing of it is taken away). The mucous membrane
of the cheek going from the upper to the lower
jaw is seen with its natural folds (hardened), the glands
on it having been removed.

Fig. 2.

n. infraorbilalis
m. pterygoideus ext.

n. lingualis
in. pterygoideus int.

glands

parotic duct

post, part of m. buccinat.
(the rest cut away)

Fig. 2. The same specimen after removal of the
m. temporalis, the ventral extension of whose origin is
indicated bv a dotted line.

Fig. 3.

n. mandibularis
tuba Eustachii (opened)

m. pterygoideus externus
opening of tuba Eust. in pharynx

part of m. temporalis inserting on
the innerside of ramus mandibular

bony capsule in the mandible
containing a new tooth

\

J

maxillary
bone

ethmoturb.

pharynx

tooth

BP**—•

Fig. 3. The postero-inferior part of the left half of
the head of a middleaged Elephant (c. 12 plates in the
tooth in action), seen obliquely from within and from
behind. The m. pteiwgoideus internus has been removed.

Fig. 4. Part of the same specimen which is figured in Plate 18 after removal of the mucous membrane
investing the cartilaginous nose etc. The small separate cartilage below the large nasal cartilage (comp. p. 101)
is represented in situ.

Fig. 5. Median section of the tongue etc. of the Elephant "Chang". The small yellow spot in the
thyreoid cartilage is an ossification. J—\ nat. size.