Nervous System and Sense Organ - Vertebrate Zoology - Lecture Notes, Study notes for Zoology. Aliah University


Description: These are the lecture notes of Vertebrate Zoology. Key important points are: Nervous System and Sense Organ, Vertebrate Zoology, Nervous System, Corpus Callosum, Arbor Vitae, Medulla Oblongata, Optic Chiasma, Sense Organs, Tapetum Lucidum, Ciliary Body
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Vertebrate Zoology
Nervous System and Sense Organ
Make sure to study the materials and models on display, especially note comparisons between
systems of vertebrate groups.
A. Nervous System
Study Fig. 22-27 -see pp. 152-154 (364-366) showing the brain in lab book; examine the
sheep brains on display to find the following. Know:
1. Brain
corpus callosum
arbor vitae
medulla oblongata
optic chiasma
hypophysis = pituitary gland
optic nerve
olfactory bulb
2. Histologyreview nerve slides:
a) Motor nerve cells: Study slide #15 (smear of tissue from ox spinal cord) -
see Fig. 4-15A in lab book.
b) Peripheral nerve: Study slide #16 (cross section and longitudinal section
of peripheral nerve) see Fig. 4-15D in lab book.
Remind teacher to show kodacolor slides and overhead transparencies of
nerve tissue to point out main features and histology of nerve tissue to
and to explain a how a motor nerve works. (Also refer to Fig. 4-15A in
lab book). Know:
- axon (takes message away from cell body)
- dendrite (takes message toward cell body)
- cell body
- cell nucleus
- nuclei of glial cell (glial cells are supporting cells)
- myelin sheath
- nodes of Ranvier
- neurilemma (spelled neurolemma in textbook)
- Schwann cell
B. Sense Organs
1. Ear: examine ear models on display. Read pp. 327-330 in lecture text; see Figs.
33-25, 33-26, and 33-29 in lecture textbook; parts & functions to know:
outer, middle, and inner ear
external auditory meatus
semicircular canal
hammer - malleus
anvil – incus
stirrup - stapes
oval window
round window
Remind teacher to use overheads to explain ear structure and how it works.
2. Eye. Cow eyes are available for dissection; have teacher demonstrate before
you do your dissection-see pp. 330-333 in textbook; see Figs. 33-32 and 33-33;
parts & functions to know:
aqueous humor
optic nerve
tapetum lucidum
choroid layer
vitreous humor
ciliary body
Remind teacher to use overheads to explain eye structure and how it works.
Other helpful hints:
1. Note kidney model and other models are still on display/demonstration be sure to review for
upcoming final lab exam.
2. Review for lab final exam: birds, bones, pig dissection, mammals, models, nervous system,
ear, and eye. Kodacolor slides of human anatomy are also a very good review for the lab test.
3. The VCR tape of the pig dissection is also available for in-lab use.
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