STE 15101 Experiment Pack - Animals and Man 

INTRODUCTION

This Experiment Pack provides a comprehensive study of a wide range of animal life and life processes, suitable for use in GCSE and introductory A level studies. All items required for experiments are provided in the Pack, with the exception of commonly available perishable items. Included is a comprehensive 62 page Instructions and Teaching Guide, enabling the experimental programme to be undertaken in An effective and progressive manner through 35 experiments in relation to the curriculum.

TOPICS COVERED

1.           PROTOZOA

2.           ANNELIDS

3.           SHELLFISH

4.           MOLLUSCS

5.           MOLLUSC SHELLS

6.           INSECTS

7.           THE INSECT’S DEVELOPMENT

8.           THE ANTHILL

9.           FISH ANATOMY

10.      HABITAT AND LIVING CONDITIONS

11.      ANIMAL CELLS

12.      GLANDULAR TISSUES

13.      MUSCULAR TISSUES

14.      STARCH DIGESTION

15.      FAT DIGESTION

16.      PROTEIN DIGESTION

17.      ENZYMES

18.      BLOOD

19.      OSMOTIC PRESSURE

20.      RESPIRATION

21.      THE SKELETON

22.      SKIN SAMPLES OF FISH AND REPTILES

23.      THERMAL INSULATION OF BIRDS AND MAMMALS

24.      pH MEASUREMENTS AND ORGANIC REACTIONS

EQUIPMENT

EXAMPLE TOPIC AND EXPERIMENT

(all worksheets have necessary diagrams)

12) GLANDULAR TISSUES

Glands are structures specialised in the elaboration of various substances (for example proteins, fats, hormones). The production of substances that are to be let out by cells for different purposes is called secretion. Glands are classified according to the destination of their secretion product. Exocrine glands secrete on the outer surface or in cavities communicating to the outside of the body. Endocrine glands secrete directly in blood vessels. Study the prepared slide number 4.

EXPERIMENT 15

REQUIRED APPARATUS

Microscope, scissors, glass dish, pipette, slide, gauze, 250 cc beaker,1 elastic band, 400 cc beaker, sugar, spoon with spatula, water, set of dyes, liver

Step 1

Buy a piece of fresh liver from the butcher. Cut it using the scissors and place it in the small beaker. Press it using the spatula, as shown in figure 27.

Step 2

Add sugared water (prepared by dissolving 2 teaspoons full of sugar for 100 cc of water). Continue to grind the liver until the mixture becomes brick-red in colour.

Step 3

Prepare the second beaker, covering it with the gauze (held in place by the elastic). Filter the mixture (see figure 28).

Step 4

Draw a few drops of the filtered mixture with the pipette. Drip it onto the glass dish, add a drop of eosin from the set of dyes, then cover with a second slide. Observe under the microscope.

EXERCISES

1 – Draw and describe what you observed under the microscope.

2 – With the help of an encyclopaedia, define each of the following glands as either EXOCRINE or ENDOCRINE.

PANCREAS    THYROID    LIVER    SEBACEOUS GLANDS    SWEAT GLANDS   RENAL GLANDS    SALIVA GLANDS    HYPOTHALAMUS    PARATHYROID   THYROID