Term 2

B3.2.1—Adaptations of capillaries for exchange of materials between blood and the internal or external environment 

B3.2.2—Structure of arteries and veins

B3.2.3—Adaptations of arteries for the transport of blood away from the heart 

B3.2.4—Measurement of pulse rates

B3.2.5—Adaptations of veins for the return of blood to the heart

B3.2.6—Causes and consequences of occlusion of the coronary arteries

B3.2.7—Transport of water from roots to leaves during transpiration

B3.2.8—Adaptations of xylem vessels for transport of water

B3.2.9—Distribution of tissues in a transverse section of the stem of a dicotyledonous plant 

B3.2.10—Distribution of tissues in a transverse section of the root of a dicotyledonous plant 

B3.2.11—Release and reuptake of tissue fluid in capillaries 

B3.2.12—Exchange of substances between tissue fluid and cells in tissues

B3.2.13—Drainage of excess tissue fluid into lymph ducts

B3.2.14—Differences between the single circulation of bony fish and the double circulation of mammals

B3.2.15—Adaptations of the mammalian heart for delivering pressurised blood to the arteries

B3.2.16—Stages in the cardiac cycle 

B3.2.17—Generation of root pressure in xylem vessels by active transport of mineral ions

B3.2.18—Adaptations of phloem sieve tubes and companion cells for translocation of sap 

B3.3.1—Adaptations for movement as a universal feature of living organisms

B3.3.2—Sliding filament model of muscle contraction 

B3.3.3—Role of the protein titin and antagonistic muscles in muscle relaxation

B3.3.4—Structure and function of motor units in skeletal muscle

B3.3.5—Roles of skeletons as anchorage for muscles and as levers

B3.3.6—Movement at a synovial joint

B3.3.7—Range of motion of a joint

B3.3.8—Internal and external intercostal muscles as an example of antagonistic muscle action to facilitate internal body movements 

B3.3.9—Reasons for locomotion

B3.3.10—Adaptations for swimming in marine mammals