SCB202 Lab Pictures Assignment – Fall II 2020-21 Online Instruction Version

The Lab Pictures assignment in SCB202 involves documenting (with photographs) specimens,
dissections, microscope slides and models studied in the lab, annotating and organizing the
images according to lab number and topic into a single file. An easy way to do this is to open a
Word file and insert a table with two columns and multiple rows and then insert an image in each
“box” as shown below (“Image 1”, “Image 2” etc represent photos, with a suitable title below
each image). The advantage of this layout is that you can usually have 6 images per page, which
makes the final file more compact. As you add more images the table rows will continue onto the
following pages. At the end of the semester after making suitable edits you should save the file
as a PDF and upload this PDF file using the link your instructor will provide on Blackboard. This
suggested arrangement results in a more compact file. For very larger specimens/images showing
many features you may use a different format as appropriate.
Image 1 Image 2
Image 3 Image 4
Image 5 Image 6
This semester due to online instruction you will not be able to take photos of specimens, etc.
in the lab. Instead, you will be required to find suitable photos of the items listed below
using internet search engines like Google. The photos you find on the internet will
substitute for photos you would have taken in the lab; the rest of the assignment would be
as described above. Note that some photos you find maybe very large or have additional things
not relevant for your purpose, so please resize and/or crop the images so that they show the
organisms or parts relevant for the assignment. Small organisms or parts of organisms are
usually studied in the lab as prepared microscope slides. Abbreviations used on the labels of such
slides are: wm = whole mount (whole organism, i.e. not a section), cs = cross section, ls =
longitudinal section. If you need more information about the organisms or any other items in the
list below please see the Lab Powerpoints or your Lab Manual. Important: The images you
include must be photographs of actual specimens, not textbook diagrams or artists’ impressions
of the structures.
For the Fall II 2020-21 semester you will be required to include in your Lab Pictures
assignment only the topics covered in Labs 7 to Lab 11 dealing with animal structure and
function (anatomy and physiology)..
Lab 7: Introduction to Animal Structure; Digestive System
External anatomy: fetal pig, male and female; rat, male and female. How to tell male and female
from externally visible features. E.g. position of urogenital opening, urogenital papilla, scrotum.
Digestive system
Dissected specimens fetal pig and rat with abdominal cavity opened to show digestive system
plus other organs/structures adjacent to digestive system parts: In fetal pig include view of mouth
opened wide to show epiglottis. Following must be visible: diaphragm, liver, gall bladder,
stomach, spleen, pancreas, small intestine, caecum, large intestine, rectum.
Slide: small intestine showing villi etc.
Lab 8: Renal (Urinary) and Reproductive Systems
Dissected specimens of male and female fetal pig and male and female rat.
Renal system: Following parts of renal system must be visible: kidneys, ureters, urinary bladder.
Reproductive system: Following parts of reproductive system must be visible: Male fetal pig:
scrotum, testis, epididymis, vas deferens. Female fetal pig: uterine horns, body of uterus, ovary,
oviducts. Mate rat: scrotum, testis, epididymis, vas deferens, prostate gland, seminal vesicles.
Female rat: uterine horns, body of uterus, ovary, oviducts.
Slides: Human kidney slide showing glomeruli/Bowman’s capsules
Mammalian testis, testis with epididymis, sperm smear; ovary with mature follicle, ovary with
corpus luteum
Lab 9: Circulatory and Respiratory Systems
Dissected specimens fetal pig and rat.
Following parts of circulatory & respiratory systems should be visible: heart and lungs in
thoracic cavity, heart showing ventricles and atria (auricles), pulmonary trunk, aorta and where
possible major arteries arising from aorta going to front legs and neck, where possible anterior
vena cava and major veins from front legs and neck; larynx, trachea.“
Slides: artery and vein cross sections; blood smear showing erythrocytes (red blood cells),
leukocytes (white blood cells), platelets. Where possible different types of leukocytes should be
indicated (e.g. neutrophils, lymphocytes).
Lab 10: Skeleton & Bone Tissue; Muscle Tissue
Skeleton & Bone:
Human skeleton with major bones indicated; skeletons of dog/cat & bird (chicken/pigeon) with
major bones indicated.
Slide: Bone dry ground.
Slides: skeletal muscle (longitudinal section), cardiac muscle, smooth muscle.
Lab 11: Nervous System and Sense Organs
Nervous system:
Sheep brain: whole brain in ventral view; dissected brain in sagittal section.
Slides: Nervous tissue showing neurons & neuroglia (glial cells); spinal cord cross section
showing main parts;
Sense organs:
Ox eye: dissected to show visible structures.
Slides: retina slide showing retina, choroid & sclera, including layers of cells in retina (rods &
cones, bipolar cells, ganglion cells); cochlea of ear (guinea pig cochlea) showing internal
structures (basilar membrane, vestibular membrane, hair cells, tectorial membrane).

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