Download Unit 2

!!!CAUTION!!!
• This power point presentation is intended
to be used as an “add on” exercise to your
standard lab experience. It is not intended
to be used in lieu of the “hands on” lab
time. In lab you will be tested on the
actual lab specimens and not the pictures
contained within this video presentation.
How to use this material
• Each specimen is illustrated in a two slide sequence.
The first slide contains a fully labeled specimen. The
second slide is missing the labels and asks you to supply
them like a test circumstance. You can toggle back and
forth between the two slides until you have mastered all
the items.
• This presentation is patterned after material within your
lab manual by Darrell Davies. Be sure to check with
your instructor for any alterations specific to your course.
• This presentation is designed to better prepare you for
lab quizzes, or Part I of the two part testing system in
each lab unit. Other video material (A.D.A.M. and
Histology) is accessed elsewhere. Those materials are
for lab practicals, Part II of testing in each lab unit.
ACKNOWLEDGEMENTS
• Funding for this presentation was obtained
through an Innovations In Learning
Technologies grant at KVCC.
• I wish to thank Marylan Hightree and Lynn
Morrison for their technical assistance during
development of this material.
• I also wish to thank Michelle VanderMeer for her
work in developing the beta version of this
presentation as her tutoring internship while
working at the KVCC Learning Center.
Unit II
lab exercises 8-10
Sarcomere
Myoneural Junction
Endocrine Glands
Sarcomere Model
Lab exercise #8
I band
A band
Actin & Myosin
overlap area
Mitochondria
Sarcoplasmic Reticulum
(all yellow areas)
? ?
? ?
? & ? overlap area
?
? ?
(all yellow areas)
Length of 1 sarcomere
Z-Line
Glycogen granules
(orange dots)
Lateral sacs
(cisternae)
Transverse tubules
Z-line
? of ? ?
? ?
(orange dots)
?-?
? ? (?)
? ?
?-?
Myoneural Junction Model
Lab exercise #8
Skeletal muscle fiber
made up of many myofibrils
surrounded by endomysium
Myoneural
junction
area
Motor neuron
sarcolemma
? ? ? made up of many ?
surrounded by ?
? ? area
?
? ?
Synaptic cleft (small space
between muscle
and neuron)
A band
(darker)
I band
(lighter)
Myelin of neuron
(yellow swirls xs.)
? ? (small space
between muscle
and neuron)
? ?
(?)
? ?
(?)
? of neuron
(yellow swirls xs.)
Multipolar Neuron
Lab exercises #9
Transverse Section
of the axon
/
a
m ath
m
e
e
h
l
ro a l S
u
Ne eur
rin
e
P
Myelin Sheath /
Sheath of Schwann
Axon core
containing
neurofibrils
?/??
? ? / ? of ?
? section
of the ?
? ?
containing
?
The Axon
Neurolemma /
Perineural Sheath
Myelin Sheath /
Sheath of Schwann
core
Nodes of Ranvier
The ?
? /
? ?
? ? /
? of ?
?
? of ?
Soma of multipolar neuron
Incoming axon
terminals
Nucleus
Dendrites
Initial segment
(Hillock) of axon
? of ? ?
? ? ?
?
?
? ?
( ? ) of ?
Brain Ventricles
Lab exercises #9
Cerebral aqueduct
Rt. Lat. Vent.
Hole for thalamus
Intermediate mass
4th. Vent.
3rd. Vent.
Rt. Lateral view of brain ventricles
? ?
? For ? ? ?
? ? ?
? ?
? ?
? ? view of ? ?
3rd. Vent.
Lt. lat. Vent.
.l l.v
.
ent.
at . V
R t. L
v.
r.l.
Anterior view of brain ventricles
? ?
? ? ?
?
? ?
?
?
?
??
?
? view of ? ?
lv
Le
ft l
ate
ra
l ve
nt.
4th. Vent.
ra
ate
ht l
Cerebral
aqueduct
Ri g
en
t.
3rd. Vent.
Choroid plexus
(pink areas)
Posterior view of brain ventricles
?
?
?
? ?
?
? ?
? ?
? ?
(pink areas)
? ?
? view of ? ?
Brain Stem
Lab exercises #9
Thalamus lateral
masses
Optic nerves
Pituitary gld.
Internal carotid a.
Pons
Medulla oblongata
Spinal cord
Anterior view of brain stem
? ? ?
? ?
? ? ?
? ?
?
? ?
? ?
? view of ? ?
Thalamus Lateral
masses
Choroid plexus
(rt. Lat. Vent.)
Pineal gld.
Choroid plexus
(3rd. Vent.)
Posterior view of brain stem
? ? ?
? ?
(? ? ?)
? ?(? ?)
? ?
? view of ? ?
Fornix
Thalamus lateral masses
3rd. Vent. &
Hypothalamic
areas
Choroid
plexuses
Thalamus
intermediate
mass
Cerebral
aqueduct
Pituitary gld.
Optic chiasm
Pons
Medulla
oblongata
Midsagittal section view of brain stem
Pineal gld.
?
? ? ?
? ?
? ? &? ?
? ?
? ? ?
? ?
? ?
?
? ?
? section view of ? ?
? ?
? view
? view
Cranial nerves
(white structures)
Inferior-anterior view of brain stem
? ?
(white structures)
?-? view of ? ?
Spinal Cord
Lab exercises #9
Dorsal roots
Dorsal root
ganglia
Gray matter
(butterfly)
Central
canal
Ventral median
fissure
Ventral roots
Spinal nerve
? ?
? ? ?
? ?(?)
? ?
? ? ?
? ?
? ?
Eye
Lab exercises #9
Superior rectus mus.
Frontal bone
Lacrimal gld.
Lacrimal duct
Cornea
(clear)
L
A
T
E
R
A
L
Sclera
Lateral rectus mus. (white)
Zygomatic bone
M
E
D
I
A
L
Iris
(blue)
Pupil
(black hole)
Maxilla bone
Inferior oblique mus.
? ? ?
? ?
? ?
? ?
?
(clear)
?
?
?
?
?
?
?
?
?
?
?
?
?
?
(white)
?
(blue)
? ? ?
? ?
? ?
? ? ?
?
(black ?)
Superior oblique mus.
rior
Medial rectus
mus.
Optic nerve
La
te
r
al
re
c
tu
s
m
us
.
Sup
e
M
E
D
I
A
L
rec
tus
mu
s.
Lacrimal gld.
Inferior rectus
mus.
L
A
T
E
R
A
L
? ? ?
?
?
?
?
?
?
?
?
?
? ?
?
? ?
? ? ?
? ? ?
? ?
?
?
?
?
?
?
?
Superior view
of dissected
eye ball
Choroid
(brown)
Inferior
rectus
mus.
Sclera
(white)
Lens
Cornea
Retina
(innermost)
Ciliary body / muscle
Medial
rectus
mus.
A
N
T
E
R
I
O
R
? view
of dissected
eye ball
? ? ?
?
(brown)
?
(white)
? ? ?
? ? / ?
?
(innermost)
?
?
?
?
?
?
?
?
?
?
Ear
Lab exercises #9
Anterior view or ear
ea
r
ear
dl
e
na l
id
Inte
r
M
Petrus part of
Temporal bone
(cut away)
External ear
External auditory meatus
? view or ear
?
? ?
?
? part of
? bone
(cut away)
? ?
? ? ?
Anterior view or ear
3 Semicircular canals
Vestibulocochlear
nerve
Ossicles in
middle ear
Cochlea
Tympanic memb. /
eardrum
Eustachian /
Auditory tube
Internal Carotid a.
? view or ear
? ? ?
? ?
? in ? ?
?
? ? / ?
?/? ?
? ? ?
Anterior view of ear detail
3 semicircular canals
Vestibulocochlear
nerve
Incus
Cochlea
Ty
m
pa
ni
c
m
em
b.
Malleus
Stapes
? view of ear detail
? ? ?
? ?
?
?
?
?
?
?
Stapes connects here
Incus
Malleus
Tympanic memb.
? connects here
?
?
? ?
Cochlear Labyrinth
Lab exercises #9
Anterior view of cochlear labyrinth
Cochlea
3 semicircular
canals
Vestibule area
L
A
T
E
R
A
L
M
E
D
I
A
L
Oval window
? view of ? ?
? ? ?
?
? area
?
?
?
?
?
?
?
?
?
?
?
?
?
??
Posterior view of cochlear labyrinth
Cochlea
Vestibulocochlear Nerve
(CN #8)
? view of ? ?
?
? ? (CN #?)
Dissected Cochlea
Vestibular membrane
Scala Vestibuli
(pink)
Scala Media
Cochlear Duct
(blue)
Organ of Corti
(inside Cochlear duct)
Vestibulocochlear nerve
Scala Tympani
(green)
Dissected ?
? ?
(pink)
? ?
? ?/? ?
(blue)
? ?
(green)
? of ?
(inside ? ? )
? ?
Human Brain
Lab exercises #9
Central fissure
Parietal lobe
Lateral fissure
Frontal lobe
Temporal lobe
Occipital
lobe
Cerebellum
Pons
Medulla oblongata
Rt. Lateral cerebral hemisphere
? ?
? ?
? ?
? ?
? ?
? ?
?
?
? ?
? ? ? ?
Corpus callosum
Pineal body / gland
Cerebral aqueduct
Intermediate mass
of thalamus
Fornix
Hypothalamic area
3rd. Ventricle area
Parietoccipital
sulcus
Optic chiasm
4th. ventricle
Lt. lateral cerebral hemisphere
? ?
? ?/?
? ? of ?
? ?
?
? ?
? ? ?
? ?
? ?
? ?
? ? ? ?
Cerebellum
Medulla oblongata
Temporal lobe
Pons
Frontal lobe
Optic nerves (CN#2)
Olfactory nerves (CN#1)
Inferior view of whole brain
?
? ?
? ?
?
? ?
? ? (CN#?)
? ? (CN#?)
? view of whole brain