Anatomy & Physiology Exam 3 Flashcards
Which cells secrete calcitonin?
parafollicular cells
Which cells secrete glucagon?
alpha cells
Which cells secrete thyroxine?
follicular cells
Which cells secrete insulin?
beta cells
Which cells secrete PTH?
chief cells secrete PTH (parathyroid hormone)
Which blood cells do not have a nucleus?
rbc, ejected when young
Where is the Cardiovascular center?
medulla oblongata
Where does diffusion take place?
capillaries
Where do all systemic arteries branch off?
Aorta
Where are the baroreceptors located?
carotid sinus, aortic arch
What is the volume of blood in an adult, what is the pH of blood?
5-7 L, 7.35-7.45 pH
What is the sclera?
white of eye
What is the ciliary muscle?
hangs the lens
What is the fovea centralis?
area of sharpest vision
What is the retina?
photo receptor location
What is the pulse rate?
reflection of heart rate
What is the # of platelets in 1 uL of blood?
150k
What is the # of erythrocytes in 1 uL of blood?
5 million
What is the # of leucocytes 1 uL of blood?
5k
What is referred pain?
pain of visceral origin (inside of body felt on outside)
What is lysozyme?
enzyme that breaks down bacteria cell walls
What is hemoglobin?
oxygen carrying protein
What is cAMP?
second messenger
What is anemia?
decreased rbc
What is polycythemia?
increased rbc
What is a myocardial infarction?
heart attack; blockage of blood vessels to heart
What cells is the endothelium made of?
simple squamous cells