Movement is a characteristic feature of living organisms. The different types of movement exhibited by cells of the human body are:
• Amoeboid movement: Leucocytes present in the blood show amoeboid movement. During tissue damage, these blood cells move from the circulatory system towards the injury site to initiate an immune response.
• Ciliary movement: Reproductive cells such as sperms and ova show ciliary movement. The passage of ova through the fallopian tube towards the uterus is facilitated by this movement.
• Muscular movement: Muscle cells show muscular movement.
How do you distinguish between a skeletal muscle and a cardiac muscle?
Draw the diagram of a sarcomere of skeletal muscle showing different regions.
Describe the important steps in muscle contraction.
Define sliding filament theory of muscle contraction.
Write the difference between:
(a) Actin and Myosin
(b) Red and White muscles
(c) Pectoral and Pelvic girdle
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell.
Describe the digestive role of chymotrypsin. What two other digestive enzymes of the same category are secreted by its source gland?
State the role of pancreatic juice in digestion of proteins.
What is meant by double circulation? What is its significance?
Also flagellar movement exhibted by sperm