Ch12: Broad Muscle
What are two types of protein fibers in muscle?
Actin and Myosin
Muscle spindles sense what characteristic of muscles?
Muscle Length
Hematocrit refers to which component of blood?
Red Blood Cells
Cardiac output is determined by what two factors?
Heart Rate and Stroke Volume
Which type of respiration occurs in the body's tissues?
Internal Respiration
A single motor neuron and all the muscle fibers it innervates is called what?
Motor unit
Gap Junctions
Which two components of blood make up the buffy coat layer?
Platelets and Leukocytes
The Frank-Starling Law states that increasing the stroke volume of the heart increases its _______.
Contractility
During expiration, does the diaphragm contract or relax?
The release of what molecule from myosin heads signals the power stroke in muscle contraction?
Phosphate
Which regulatory protein is absent in smooth muscle contraction?
Troponin
What hormone released by the liver increases MegaKaryocyte production?
Thrombopoietin
The blood in the ventricle after it has completely filled is called what?
End Diastolic Volume
Which type of alveolar cell produces the substance that reduced surface tension in the lungs?
Type II
Conversion between muscle fiber types can only occur between which two muscle fibers?
Type IIa and Type IIx
What specific molecule directly allows for the formation of cross-bridges in smooth muscle?
Phosphate
In autorythmic cells, the opening of which channels Calcium release?
HCN "Funny Channels"
Net absorption occurs on which end of the capillary?
Venule end
Central chemoreceptors in the medulla are sensitive to what molecule?
H+ only
While doing a squat, the quadriceps muscles experience what type of muscle contraction?
Eccentric Isotonic
Calcium binding to Calmodulin in smooth muscle contraction directly causes what to happen?
MLCK activation
Where does lymph come from?
Interstitial Fluid
An ACE inhibitor would have what effect on blood volume?
Decreases Blood Volume
Respiratory alkalosis is compensated for by what process?
Renal excretion of Bicarbonate