Question

A female just had a cup of coffee with cream and sugar. You are following the journey of the glucose molecule from ingestion thru cellular respiration which creates H2O and CO2. You will follow the CO2 molecule until exhalation and the H2O to excretion. List the following pathways.

A.            List the physical pathway from the oral cavity to the point of absorption in the gastrointestinal tract.

B.            List the physical pathway from the point of absorption of the glucose molecule in the gastrointestinal tract to getting to the right gastrocnemius muscle.

Answer 1

physical pathway from the oral cavity to the point of absorption in the gastrointestinal tract

ORAL CAVITY------> OROPHARYNX-------> UPPER ESOPAGEAL SPHINCTER------>ESOPHAGUS---------->LOWER ESOPHAGEAL SPHINCTER-------->STOMACH----->PYLORIC VALVE------> SMALL INTESTINE----> NUTRIENTS ARE ABSORBED.

physical pathway from the point of absorption of the glucose molecule in the gastrointestinal tract to getting to the right gastrocnemius muscle

SMALL INTESTINE ------>SODIUM GLUCOSE COTRANSPORTER (PRESENT IN THE LUMINAL SIDE OF INTESTINE)--------->GLUT TRANSPORTER----->BLOOD CAPILLARIES IN THE VILLI-------->SUPERIOR MESENTERIC VEIN --------> HEPATIC PORTA VEIN ----------> CENTRAL VEIN------>INFERIOR VENECAVA------->RIGHT ATRIUM-------->TRICUSPID VALVE ------>RIGHT VENTRICLE--------->PULMONARY ARTERY-------->LUNGS------->PULMONARY VEIN-------->LEFT ATRIUM -------->BICUSPID VALVE------->LEFT VENTRICLE-------> AORTA------->ABDOMINAL AORTA--------->COMMON ILIAC ARTERY-------->RIGHT EXTERNAL ILIAC ARTERY------->RIGHT FEMORAL ARTERY----->RIGHT POPLITEAL ARTERY-------->RIGHT SURAL ARTERY---------->RIGHT GASTROCNEMIUS