What I don't know

Question 1

steps of neuromuscular junction

Answer 1

1. activation of calcium channels
2. acetylcholine secretion
3. Ach binds to nicotinic receptors, activating them
4. skeletal muscle action potential firing
5. post-synaptic depolarisation

Question 2

what occurs during muscular contraction and relaxation?

Answer 2

actin and myosin sliding past each other

Question 3

steps of muscular contraction
ARtists

Answer 3

Acetylcholine Release

Question 4

steps of muscular contraction
APpropriately

Answer 4

Action Potential

Question 5

steps of muscular contraction
Try

Answer 5

T-tubules

Question 6

steps of muscular contraction
CRack

Answer 6

Calcium Release

Question 7

steps of muscular contraction
Cocaine

Answer 7

Contraction

Question 8

steps of muscular contraction
Recipes

Answer 8

Recapture calcium

Question 9

steps of muscular contraction
Regularly

Answer 9

Relaxation

Question 10

what is haemeostasis

Answer 10

process of sealing a ruptured blood vessel

Question 11

first step of haemostasis

Answer 11

vascular spasm
- contraction of blood vessel to reduce blood loss

Question 12

second step of haemostasis

Answer 12

platelet plug
- platelets bind to collagen at site of injury and form endothelial lining

Question 13

third step of haemostasis

Answer 13

coagulation
- fibrinogen turns to fibrin mesh, forming a blood clot

Question 14

fourth step of haemostasis

Answer 14

clot retraction
-proteins within platelets contract, causing clot to get closer together to heal

Question 15

5th step of haemostasis

Answer 15

fibrinolysis
- thrombin activates plasminogen to produce plasmin, breaking down fibrin strands and removing clot

Question 16

Vital capacity

Answer 16

Tidal Volume + Inspiratory Reserve Volume + Expiratory Reserve Volume

Question 17

in which form is most of the carbon dioxide transported in your blood?

Answer 17

as bicarbonate ions

Question 18

functional relationship between haemoglobin and pH

Answer 18

As pH increases, Hb binds more CO2

Question 19

What closes the bicuspid valve?

Answer 19

The movement of blood from the left atrium toward the left ventricle

Question 20

During the ventricular relaxation phase of the cardiac cycle…

Answer 20

pressure in the ventricles is greater than that in the atria

Question 21

What is the effect of local hypercapnia (increased partial pressure of CO2) on skeletal muscle arterioles?

Answer 21

Increased permeability of the arterioles

Question 22

function of type I pneumocytes

Answer 22

increase the surface area available for gas exchange

Question 23

What happens if surfactant production decreases?

Answer 23

inspiration becomes harder

Question 24

Which process results in the greatest amount of ATP?

Answer 24

glycolysis

Question 25

what happens during depolarisation?

Answer 25

sodium ions enter the neuron

Question 26

what type of reflex is the withdrawal reflex?

Answer 26

monosynaptic

Question 27

P wave

Answer 27

- Atrial depolarisation (contraction/ systole) - electrical impulse in SA node spreads across atria

Question 28

QRS complex

Answer 28

- Ventricular depolarisation (contraction/ systole) - electrical signal travels through the AV node, Bundle of His, and Purkinje fibers

Question 29

T wave

Answer 29

- Ventricular repolarisation - ventricles relax and reset electrically

Question 30

movement of glucose

Answer 30

Facilitated diffusion (passive process)

Question 31

transcription

Answer 31

process of making a mRNA molecule from DNA in the nucleus

Question 32

what happens during repolarisation?

Answer 32

potassium ions leave the neuron through voltage-gated channels

Question 33

patella reflex type

Answer 33

monosynaptic

Question 34

causes neurotransmitter to be released at the neuromuscular junction

Answer 34

calcium channels open and calcium rushes into axon terminal of neuron

Question 35

What structures in the lungs allow for gas exchange?

Answer 35

Alveoli, alveolar ducts, and respiratory bronchioles

Question 36

Air moves into the lungs when:

Answer 36

atmospheric pressure is higher than pressure in the lungs

Question 37

volume of air that can be inhaled over and above at the end of a normal tidal inhalation

Answer 37

Inspiratory reserve volume