Anatomy Flashcards
What and where is the Liver
The largest organ in the body.
Located in the right hypochondriac and extending to the epigastrium.
Blood flow in the heart
Blood comes through the superior and inferior vena cava into the right atrium - tricsubid valve - right ventricle - pulmonary valve - pulmonary artery - lungs - pulmonary veins - left atrium - mitral valve - left ventricle - aortic valve - aorta
How many lobes are in the lungs
Right - 3
Left - 2
Superior middle and inferior
The bronchial tree
Trachea Primary bronchi Secondary bronchi Tertiary bronchi Bronchioles Terminal bronchioles
The pleural membranes of the lungs
Parietal pleura is the outer layer
Visceral pleura is the inner layer
The alveoli
type 1 - Thin structures which allow for gas exchange from the blood into the lung and vice versa
type 2 - synthesize surfactants to reduce surface tension
Salivary glands
Important accessory organ of digestion Role is to lubricate the tissue of the mouth and start the process if digestion: Parotid glands Submandibular glands Sublingual glands
Parts of the stomach
Cardiac sphincter Fundus Body Antrum Pylorus
Gastric layers are made up of?
Serosa Muscularis externa Submucosa Mucosa Lumen
Biliary tree
Bile flow
Right hepatic duct, left hepatic duct
Common hepatic duct
Where is the pancreas?
Lying posterior to the creater curvature of the stomach
Describe diastole
Relaxation of the heart muscles. Ventricular or atrial relaxation
Describe systole
Contraction of the muscle. Ventricular or atrial contraction
How the right and left side of the heart brings blood
SVC brings deoxygenated blood from the systemic circulation superior to the heart. IVC inferior to the heart. Pulmonary trunk exits right ventricle with deoxygenated blood.
Pulmonary veins carries oxygenated blood to pulmonary circulation. Aorta leaves heart and has high pressure taking blood to systemic circulation.
The heart cycle
Ventricular contraction - atrial ventricular valves close (ventricular systole) - semi lunar valves remain closed - inc pressure in ventricles - semi lunar valves open - ventricles relax - pressure drops - back flow of blood closes semi lunar valves (ventricular diastole) - atrial ventricular valves remain closed- pressure in ventricles becomes lower than atria - atrial ventricular valves open - blood flows into relaxed ventricles - atria contracts to complete ventricular filling