0
What else can I help you with?
Which is the phase of cardiac cycle in which the auricles contract?
The auricles will contract during the systolic phase of the cardiac cycle. This is one of the numbers that is measured when a patient has their blood pressure taken.
What does the muscle tissue do to make the heart pump?
The muscle tissue on one side contracts while the other relaxes, controlled by electrical impulses to the heart muscle.
How does the heart contract or relax?
The heart contracts and relaxes during a cardiac cycle.
What is the function of the intercalated disc?
Basically, the cardiac action potential travel across them, making it easier for the electrical impulses to move quickely.
What is the term that refers to the portion of the cardiac cycle when the ventricles contract and eject blood from the heart?
Systolic pressure
What nervous system innervates cardiac and smooth muscles and glands?
They are controlled by the autonomous nervous system.== ==
What are Neurons that conduct impulses to the cardiac muscles?
Motor neurons are the neurons that conduct impulses from the central nervous system to cardiac muscle, smooth muscle, and glandular epithelial tissue. These types of nerves are what make up the Autonomic nervous system, which regulates the bodies involuntary functions.
Why is it so important for the cardiac muscles to be controlled by the autonomic nervous system?
Since continuous blood flow is necessary to keep us alive, if the cardiac muscles were NOT controlled by the autonomic nervous system, we would die as soon as we fell asleep and quit thinking about making the muscle move. Sweet Dreams...
How is the cardiac cycle timing regulated?
The cardiac cycle timing is primarily regulated by the sinoatrial (SA) node, which serves as the heart's natural pacemaker. It generates electrical impulses that initiate each heartbeat, causing the atria to contract. These impulses then travel to the atrioventricular (AV) node, which introduces a slight delay before transmitting signals to the ventricles, ensuring coordinated contractions. Additional factors, such as autonomic nervous system inputs and hormones, can influence heart rate and the timing of the cardiac cycle.
What type of muscle tissue has a gap junction?
Cardiac muscle tissue has gap junctions to allow impulses to travel quickly though the tissue so the two atria can contract as one and the two ventricles can contract as one.
Is the cardiac muscle voluntary?
No because the heart is a cardiac muscle and you cant' control the heart
3 kinds of muscles?
The three kinds of muscles are the smooth, cardiac and the skeletal. The smooth muscles are controlled by the autonomic nervous system. The cardiac muscles are in the heart and the skeletal help move our bodies.
What are the two functional classifications of reflexes?
The two functional classifications of reflexes are autonomic reflexes, which regulate activities of smooth muscle, cardiac muscle, and glands, and somatic reflexes, which involve skeletal muscles. Autonomic reflexes are involuntary and controlled by the autonomic nervous system, while somatic reflexes are voluntary and controlled by the somatic nervous system.
Which effector is not directly controlled by the autonomic nervous system?
Skeletal muscle is not directly controlled by the autonomic nervous system. Skeletal muscles are under voluntary control, with motor neurons from the somatic nervous system providing the neural input for their activation. Autonomic nervous system controls smooth muscle, cardiac muscle, and glands.
Are most cardiac muscles controlled directly by the nervous system?
No, most cardiac muscles are not directly controlled by the nervous system. The cardiac muscles have their own intrinsic pacemaker called the sinoatrial (SA) node that generates electrical impulses and coordinates the contraction of the heart. While the nervous system can influence the rate and strength of the heart's contractions, it does not have direct control over the cardiac muscles.
What impulses does a cardiac pacemaker use?
A cardiac pacemaker uses electric impulses to regulate a beating heart. Cardiac pacemakers are designed to treat various forms of arrhythmia (heart beat irregularities).
What effector is not controlled by the ANS?
Skeletal muscle is an effector not controlled by the autonomic nervous system (ANS). Instead, it is primarily controlled by the somatic nervous system, which governs voluntary movements. In contrast, the ANS regulates involuntary effectors, such as smooth muscle, cardiac muscle, and glands.
