Test Paper 2 Flashcards
How are nervous messages carried?
Across neurons
What are the two main parts that make up the central nervous system?
Spinal chord
Brain
How are hormonal messages carried?
In the blood
What is the tube in the penis?
What 2 liquids pass down it?
Urethra
Semen (sperm), urine
What is the blood vessel that enters the left side of the heart? Is it oxygenated?
Pulmonary vein
Yes
What is the blood vessel that leaves the left side of the heart? Is it oxygenated?
Aorta
Yes
What is the blood vessel that enters the right side of the heart? Is it oxygenated?
Vena cava
No
What is the blood vessel that leaves the right side of the heart? Is it oxygenated?
Pulmonary artery
No
Name the effects of smoking in the lungs
Reduces surface area of alveoli
Damages cilia
Build up of mucus not wafted (by cilia)
Leads to bronchitis
Name the effects of smoking in the circulatory system
Carbon monoxide (CO) binds irreversibly to haemoglobin in red blood cells
Platelets become sticky
More blood clots
What is the function of the Waxy cuticle
Waxy/shiny surface reduces water loss
What is the word equation for photosynthesis?
Carbon dioxide + water ➡️ oxygen + glucose
How is the waste product of photosynthesis removed from the leaf?
Oxygen is diffuses from the leaf via the stoma
Blood: what is the function of a platelet?
Clots the blood
Blood: what is the function of a phagocyte? (White blood cell)
Engulf and digests foreign bodies
