exam 5 Flashcards
(20 cards)
name the blood vessel that delivers blood to the lungs
pulmonary arteries
what is the definition of tidal volume
the amount of air that enters(inhale/exhale) the lungs per breath
out of alveolar pressure, intrapleural pressure, and atmospheric pressure, which pressure changes during inspiration
alveolar pressure decreases, intrapleural pressure decreases (becomes lower than atmospheric)
out of alveolar pressure, intrapleural pressure, and atmospheric pressure, which pressure changes during expiration
alveolar pressure increases, intrapleural pressure become less negative
how many alveoli are there
145 mmhg
what is the value of the partial pressure of oxygen in the alveoli
105 mmhg Po2
what is the value of the partial pressure of oxygen in the arteries
40 mmhg Po2
what is the value of the partial pressure of carbon dioxide in the alveoli
40 mmHg Pco2
which muscles are used during normal inspiration
diaphragm, external intercostal muscles
what happens to the volume of the lungs during expiration
it decreases the diaphragm and intercostal muscles relax, causing thoracic cavity to decrease the volume of the lungs
which hormones travel freely in the blood
steroid hormones, thyroid hormones
which hormone increases the calcium level in the blood
parathyroid hormone-> responsible for regulating blood calcium levels
which hormone decreases the calcium level in the blood
calcitonin
what enzyme facilitates the attachment of iodine to Tyrosine
(Tp) thyroid peroxidase-> iodine attached on (Tg) by (Tp)
what is thyroglobulin
a polymer of tyrosine, is a protein made in rough ER and transported to the colloid by exocytosis
what is chemical composition of ADH
(vasopressin) antidiuretic hormone-> prevent water loss(causing kidneys to re-absorb more water, produce urine,
maintaining fluid balance in body)
what is the function of cortisol
increases plasma, concentration on glucose fatty, acids, and amino acids
increase a few availability to brain, anti-inflammatory effects affects memory function, prevent growth, lypolytic and proteolytic hormone
Where in the cells are steroid hormones produced
synthesis occurs in the mitochondria and smooth
which hormones use intracellular receptors
steroid hormones thyroid hormones retinoids
which hormone requires iodide for its synthesis
Thyroid hormones-> Iodide actively transported from bloodstream
