Semester 2 Exam** Flashcards
Closes off the larynx during swallowing
Epiglottis
Windpipe
Trachea
Smallest conducting respiratory passageways
Bronchioles
Organs of gas exchange
Lungs
Known as the breathing muscle; separates the abdominal cavity from the thoracic cavity
Diaphragm
Helps keep particles from entering the trachea and aso houses the vocal cords
Larynx
Separates the oral cavity from the nasal cavity
Hard palate
Breaks down starch during mechanical digestion
Amylase
Helps with mechanical digestion
Teeth
What are teeth made of?
Enamel, dentin, pulp, cementum, nerves, blood vessels
Mixing food with saliva
Bolus
Series of muscular contractions
Peristalsis
Helps to break down protein
Pepsin
Watery mixture of stomach fluids and food
Chyme
Finger like projections in the small intestine
Villi
Keeps the small intestines together
Mesentary
What are the 3 parts of the small intestine?
Duodenum, jejunum, ileum
What are the 4 parts of the large intestine?
Ascending, traverse, descending, rectal
What accessory organ produces bile?
Liver
What does bile break down?
Fat, carbs, proteins, detoxes alcohol
What does the pancreas secrete?
Insulin and pancreatic juices
What is the function of the pancreas?
Produce insulin to regulate blood sugar levels, produce pancreatic juices to break down nutrients, produce sodium bicarbonate to neutralize stomach acid
Detects tissue damage
Pain receptors
Responds to temperature
Thermoreceptors
Small oval masses of flattened connective tissue; detects changes in pressure or movement
Mechanoreceptors
Detect light energy
Photoreceptors
Oxygen-binding protein in red blood cells
Hemoglobin
Low hematocrit disorder
Anemia
Senses change in the chemical concentration of substances
Chemoreceptors
What is the function of red blood cells?
Increase surface area and transporting gases
The production of red blood cells
Erythropoiesis
What hormone stimulates erythropoiesis?
Erythropoietin
What is the function of the leukocytes?
Protect against infection
Squeezing of leukocytes between the cells of blood vessel walls
Diapedesis
The hormone that stimulates megakaryocytes and platelets develop from hemocytoblasts
Thrombopoietin
What is the function of thrombocytes?
Help in blood clotting
A decrease in the diameter of a blood vessel
Vasoconstriction
An increase in the diameter of a blood vessel
Vasodilation
Part of the pharynx in the posterior part of the nasal cavity
Nasopharynx
What is the function of the nasopharynx?
Provides a passageway for air during breathing
Passageway for food moving downward fro the mouth and for air moving to and from the nasal cavity
Oropharynx
Binds food particles and lubricates the food during swallowing
Mucus
Secretion of the gastric glands in the stomach
Gastric juices
Hormone secreted by the pancreatic islets that releases stored glucose
Glucagon
Lymphocyte that produces and secretes antibodies that bind and destroy foreign antigens
B cell
Proteins that B cells of the immune system produce in response to nonself antigens
Antibodies
Chemicals that stimulate B cells to produce antibodies
Antigens
A type of lymphocyte that interacts directly with antigens, producing the cellular immune response
T cell
What is the function of lacteals?
Absorb digested fats and transport them to the venous circulation
Where are lacteals located?
Lining of the small intestine
Beginning of the large intestine; a large dilated pouchlike structure that hangs slightly below the ileocecal opening
Cecum
Thick folds of the stomach’s inner lining
Rugae
Blood vessels located on the surface of the heart
Coronary blood vessels
Brings newly absorbed nutrients into the sinusoids and nourishes hepatic cells
Hepatic veins