Answer:
The correct answer is: β1 adrenergic receptor activation. Increased in cAMP lead to increased amounts of Na influx (though if channels) and calcium influx of pacemaker cells. This increases the frequency of APs of the pacemaker and increases the rate of contraction.
Explanation:
cAMP generated in response to β1 adrenergic receptors,results in excitation contraction coupling by initiating PKA and causing phosphorylation of L type Ca2+ channels and ryanodine receptors. This increases the concentration of intracellular Ca2+ ions in atrial cells, ventricular cells and AV pacemaker cells. This increase in firing rate. As a result rate of contraction increases.
Commentulism: one organism has benifit, other no affect.
Mutualism: both organisms have benifit.
The lateral rectus and the medial rectus muscles are responsible for Adduction and Abduction of the eye
The muscles of the eye help to move and stabilize both eyes. Six extraocular muscles control all of the movement of the eye which are
- Superior rectus,
- Inferior rectus,
- lateral rectus,
- medial rectus,
- superior oblique,
- inferior oblique.
Adduction is the movement of the eye towards the nose with the medial rectus muscle responsible for it while Abduction is the movement of the eye away from the nose with the lateral rectus responsible for it .
Learn more:brainly.com/question/12944393
<span>Answer:
Turning from side to side will change the position of the catheter, thereby freeing the drainage holes of the tubing, which may be obstructed. Drinking a glass of water and deep breathing and coughing do not influence drainage of dialysate from the peritoneal cavity. The position of the catheter should be changed only by the primary healthcare provider.</span>
Taproot & fibrous those should be your answers
