Bio1AL_Fa09_lab8_review

Bio1AL_Fa09_lab8_review - 1.

PHYLUM
CHORDATA


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PHYLUM
CHORDATA
 VERTEBRATE
ANATOMY
 Four
notable
characteristics
of
the
phylum:
 ‐The
presence
of
pharyngeal
gill
clefts
at
some
point
in
development.
 ‐The
presence
of
a
notochord
at
some
point
in
development.
 ‐The
presence
of
a
single,
hollow,
dorsal
nerve
cord.
 ‐Post
anal
tail.
 2.

THE
RAT
DISSECTION
 ‐Use
a
scissors,
not
a
scapel,
to
snip
the
skin
and
muscles.
 ‐Do
not
plunge
the
scissors
deeply
into
either
the
abdominal
or
thoracic
cavities
or
you
will
damage
the
 organs
underneath.

Be
especially
careful
when
cutting
through
the
rib
cage
into
the
region
near
the
heart.
 ‐If
you
cut
the
intestines,
it
may
STINK
considerably.
 ‐Remove
ALL
pins
from
the
rat
when
finished.

Wrap
the
rat
NEATLY
in
a
plastic
bag,
secure
with
2
strips
of
 tape,
and
place
in
the
freezer.
 You
should
be
able
to
define:
dorsal,
ventral,
medial,
distal,
proximal,
lateral,
posterior,
anterior.
 You
should
be
able
to
identify
all
of
the
following
structures.
 External
Features:

 
 
 Head:

External
nares
(“nostrils”),
Vibrissae
(“whiskers”),
Pinnae
(“ears”).
 Oral
Cavity:
Incisors,
hard
and
soft
palate,
tongue
 
 Internal
Features:
(visible
after
dissecting
the
rat).
 Digestive
System ‐Abdominal
cavity
(lined
with
 peritoneum) ‐Pharynx
(vs.
larynx) ‐Esophagus ‐Stomach ‐Small
intestine
(duodenum
&
 jejuno‐ileum) ‐Caecum ‐Liver ‐Submaxillary ‐Parotid ‐No
gall
bladder
in
rats ‐Colon -Pancreas Excretory
System ‐Kidneys ‐Ureters ‐Urinary
bladder ‐Urethra Miscellaneous Structures -Adrenal gland -Mesentery Respiratory
System ‐Pleural
Cavity ‐Trachea
with
cartilaginous
rings ‐Epiglottis ‐Lungs -Diaphragm Immune
System ‐Lymph
nodes ‐Spleen -Thymus Circulatory
System Heart

 









‐
rt.
&
lt.
atria 









‐
rt.
&
lt.
ventricles Pulmonary
veins
&
arteries, Aorta
and
vena
cava Neck
Region Salivary
Glands 




‐Submaxillary 




‐Parotid ‐Lacrymal
glands ‐Lymph
nodes
 ‐Parotid
duct -Facial nerve Mammary
Glands Nipples Salivary
Glands ‐Submaxillary ‐Parotid Reproductive System Male -Testes -Seminiferous tubules (inside of testes) -Coagulating gland -Vas Deference -Seminal vesicles -Prostate gland -Epididymis (cauda and caput) -Preputial gland Female -Ovary -Fallopian tube -Uterus -Preputial gland 3.

REQUIRED
DRAWINGS:
Include
labels.
 A55
–
Fall
2009
 ...
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This note was uploaded on 01/28/2010 for the course BIO biology taught by Professor Meighan during the Fall '09 term at Berkeley.

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