The two numbers that measure your blood pressure are written like a fraction: one number on top and one on the bottom -- for example, 128/82. Systolic blood pressure measures the pressure inside your blood vessels at the moment your heart beats. The number on the bottom is your diastolic pressure.
Ginny Weasley's wand is made of yew wood with an unknown length and core materials. The wand was manufactured by Garrick Ollivander sometime before Ginny began her education at Hogwarts School of Witchcraft and Wizardry. Ginny conjuring a horse Patronus with her wand.
James (like Ginny) was a chaser for the team. The seeker (Harry, and whoever was seeker for James' team) was a better flyer. However, when the seeker was unable to play, the chaser (Ginny/James) was skilled enough to fill in until the regular seeker was able to come back. Ginny was also a good seeker and regularly won games while she was in the position.