Test #3 Flashcards
What are the smallest blood vessels in your body?
Capillaries
Which direction do arteries carry blood?
The always carry blood away from the heart
Do arteries always carry oxygenated blood or deoxygenated blood or both?
Some carry oxygenated blood and others carry deoxygenated blood
What best describes a prolapsed valve?
Valve protruding abnormally from ventricle back in atrium
Which chamber receives blood from the lungs?
Left atrium
Which chamber of the heart sends blood to the body?
Left ventricle
Which has thicker muscles, atria or ventricles?
Ventricles
Which way does blood normally flow in the heart?
From atria into ventricles
What is a heart murmur?
Irregular heart sound
What is a portal vein?
A vein running between 2 capillary beds
Which chamber of the heart has the pacemaker?
Right atrium
What is considered a pacemaker?
Sinoatrial node
What makes the muscle fibers in the pacemaker depolarize?
Nothing, they do it on their own
Is diastole when the heart is contracted or relaxed?
Contracted
What term describes the opposite condition to diastole?
Systole
What is ascites?
Fluid in abdomen from poor heart function
Would you expect to find oxygenated or deoxygenated blood in the left side of the heart?
Oxygenated
What is formed from thrombocytes?
Platelets
What is a leukocyte?
White blood cell
What is an erythrocyte?
Red blood cell
What best describes fibrillation?
When a heart muscle contracts out of sequence, instead of having a coordinated beat.
Contact with what makes platelets sticky?
Collagen
What is fibrin for?
Clots
What is a common cause of anemia?
Lack of iron
Blood plasma is mostly made of what?
Water
What is not part of the skeletal muscle pump?
The heart
Is bradycardia when the heart beats too fast or too slow?
Too slow
What term best describes the opposite condition of bradycardia
Tachycardia
What is another term for hypertension?
High blood pressure
Does blood hydrostatic pressure (BHP) push fluid out or pull fluid into blood vessels?
Push fluid out
Does blood colloid osmotic pressure (BCOP) push fluid out of the blood or pull fluid back into the blood?
Pull fluid into the blood vessels
Does BCOP cause filtration or reabsorption?
Reabsorption
If you increased BCOP and kept everything else the same, would you expect an edema?
No
If you got rid of the large proteins in blood, but kept everything else the same, would you expect an edema?
Yes
If you got rid of the large proteins in blood, what would change?
BCOP
Does high blood pressure increase or decrease stroke volume?
Decrease
What do + inotropic agents make the heart do?
Best harder
Is Ca2+ a positive or negative inotropic agent?
Positive
What organ is malfunctioning if you have jaundice?
Liver
The yellow color in jaundice is cause by the buildup of what?
Bilirubin
What is a thrombus?
Any unwanted clot
What is an embolus?
A floating piece of clot
What does creating store?
Phosphate
What does myoglobin?
Oxygen
Is myoglobin associated with dark meat or white meat?
Dark meat
Would you expect slow twitch fibers to have lots of myoglobin?
Yes
Would you expect fast glycolysis fibers to have lots of myoglobin?
No
What is the origin of a muscle?
Attachment site on bone that muscle doesn’t move
What is a neurotransmitter that affects muscles?
Acetylcholine (ACh)
What is the enzyme that destroyed acetylcholine?
Acetylcholine esterase
What allows myosin and actin to detach from each other?
ATP
What supplies energy during muscle contraction?
ATP
Myosin, actin, and troponin belong to what class of macromolecules?
Proteins
Which of these is referred to as the thin filaments to of a muscle?
Actin
What wraps around the thin filaments
Troponin
What covers over myosin binding sites in a relaxed muscle?
Troponin
What does Ca2+ attach to during a muscle contraction?
Troponin
If a muscle ran out of Ca2+, would it be unable to contract or relax?
Contract
If a muscle lack acetylcholine esterase, would it be unable to contract or relax?
Relax
What is a sphincter muscle?
A ring-like muscle that controls an opening to an organ
What is the smallest contracting unit of a muscle?
Sarcomere
What stores Ca2+
Sarcoplasmic reticulum (SR)
What is one of the structures that help carry vibrations from the outer ear to the inner ear?
Incus
What stricter generates the nerve signal that tells you that your head is spinning
Semicircular canals
What structure generates the signal that tells you that your head is hanging down?
Utricle and saccule
How does bending of hairs on hair cells helps you create the sensation of hearing?
Opens KC channels
What is one of the structures that had hair cells in the ear?
Cochlea
What makes hair cells bend to crest hearing?
Vibrations
What is binocular vision?
Seeing an object with both eyes at the same time
What is referred pain?
Pain in one part of the body that is signaling injury or problems in another part of the body
What is phantom pain?
Pain in a phantom limb
What creates the taste of bitter?
Poisons
What creates the taste of sour?
H+
What creates the taste of salt?
Na+