Biology 12
Name:________________
Quiz #15
1. Match each term in the left-hand column with the best definition from the right-hand column.
Please put the letter of the best definition beside the appropriate term. (1 mark each = 10 marks)
SA (sino-atrial)
node
A. the SA node is connected to the brain by this nerve
heart attack
B. a term that refers to low blood pressure
AV (atrioventricular) node
C. occurs when the coronary artery is blocked, or bursts open
atherosclerosis
D. it is found in the right atrium close to the tricuspid valve, when
it receives a nerve impulse, it fires to initiate the contraction of
the large ventricles
bundle of His
E. occurs when capillaries burst in the brain, due to high blood
pressure
stroke
F. it is found along the wall of the right atium chamber; it
stimulates the simultaneous contraction of the atria
Purkinje fibres
G. a term that refers to high blood pressure
hypotension
H. the SA node sends a nerve impulse along this nerve trunk to the
AV node
vagus nerve
I. refers to the hardening of the arteries due to a build-up of
plaque
hypertension
J. the AV node sends a nerve impulse through these thick nerve
trunks, which cause the ventricles to contract
2. Please choose and define any THREE (3) of the following terms in the space below.
(2 marks each = 6 marks)


nodal tissue
diastolic pressure


electrocardiogram
brachial artery


systolic pressure
autonomic nervous system