The heart of which animal is myogenic in nature?A. co*ckroach B. Leech C. Elephant D. All of the above (2024)
Hint: Myogenic means taking place or functioning in ordered rhythmic fashion as of the inherent properties of cardiac muscle rather than specific neural stimuli. Myogenic heartbeat is inaugurated by a specialized group of modified heart muscle fibres.
Complete answer: Let's discuss the option and find the correct answer. A. co*ckroach: Control of the co*ckroach heart seems to be organized on three levels. The basic rhythm is myogenic. The timing of the contractions is influenced by inputs from the intrinsic cardiac ganglion cells possibly via a response mechanism involving the contractions of the heart muscle. Hence option A is incorrect . B. Leech : Two tubular hearts propel blood across the closed circulatory system of the medicinal leech. The hearts are myogenic, but are driven by a centrally generated motor pattern which controls heart rate and intersegmental coordination. Hence option B is incorrect C. Elephant: The heart of an elephant is myogenic as all the vertebrates have myogenic hearts. Myogenic contraction refers to a contraction initiated by the myocyte cell itself rather than an outside occurrence or stimulus, such as nerve innervation. Hence option C: Elephant is the correct answer.
Note: Myogenic is the term used for muscles or tissues that can contract on their own, without any external electrical stimulus, from the brain or spinal cord . An example of this phenomena is literally present in our kidneys to regulate the flow of blood in vessels. Another example is the human heart.
The function of MyoD in development is to commit mesoderm cells to a skeletal myoblast lineage, and then to regulate that continued state. MyoD may also regulate muscle repair. MyoD mRNA levels are also reported to be elevated in aging skeletal muscle.
as all the vertebrates have myogenic hearts. Myogenic contraction refers to a contraction initiated by the myocyte cell itself rather than an outside occurrence or stimulus, such as nerve innervation. Hence option C: Elephant is the correct answer.
co*ckroach belongs to the phylum Arthropoda. The heart of a co*ckroach is neurogenic because it requires a nervous impulse to contract. On the wall of the heart cluster of neurons is present that produces the rhythmic motor output for the heartbeat.
The myogenic heart is found in vertebrates. This kind of heart is called a human heart which can beat on its own and doesn't need any external impulse. The impulse is generated by a pacemaker in the heart. This kind of heart is present in rats, rabbits, humans, and other mammals too.
Myogenic heart is the one where the impulses for contraction and relaxation of muscles of heart is generated and transmitted by specialised cardiac muscles. Human heart is myogenic.
A myogenic heart contracts by itself without any external stimulus, while a neurogenic heart contracts after receiving an external stimulus in the form of a nerve impulse. Humans, frog and Mussels have myogenic hearts where as limulus has neurogenic heart.
The heart of an elephant is myogenic, as all the vertebrates have myogenic hearts. Myogenic contraction refers to a contraction initiated by the myocyte cell itself instead of an outside occurrence or stimulus such as nerve innervation.
The SA node is responsible for maintaining the heartbeat and pulse rate. Complete answer: Mammals have a myogenic heart which contracts and relax rhythmically and regulates blood flow.
The hearts of the invertebrate mollusks, like those of vertebrates, are myogenic. They are sensitive to pressure and fail to give maximum beats unless distended; the beats become stronger and more frequent…
The structure of animal hearts varies: mammals, birds, and crocodilians have four-chambered hearts, while most reptiles and amphibians have three, and fish have two. Four-chambered hearts consist of two atria, where blood enters the heart, and two ventricles that pump the blood out of the heart.
Additional Information: -Earthworms have a neurogenic heart. -The latero-esophageal hearts have thick muscular walls and consist of a pair of valves at each junction with the dorsal vessels and supra-oesophageal vessel, and another pair of valves at the ventral end.
adjective. myo·gen·ic ˌmī-ə-ˈje-nik. : taking place or functioning in ordered rhythmic fashion because of the inherent properties of cardiac muscle rather than specific neural stimuli.
The heart of a frog has specialized muscles (the sino-auricular node) to send out an impulse that causes it to contract. So, the frog's heart is referred to as the Myogenic heart. The frog's heart is independent of the neurological system to excite itself.
Since the heartbeat is initiated by the SA node and the impulse of contraction originates in the heart itself, the human heart is termed myogenic. The hearts of vertebrates and molluscs are also myogenic.
The human heart is an example of myogenic heart, it possesses cardiac muscle helping the heart to automatically contract spontaneously; which do not need any stimuli as in neurogenic heart. A myogenic heart is capable of generating a cardiac contraction independent of nervous input.
co*ckroach has a 13 chambered tubular heart. Oxygenated blood enters each chamber through a pair of a slit like openings called ostia. The first chamber opens into aorta which further opens into head sinuses.
co*ckroaches have multi-chambered, tube-like hearts that are far more resistant to failure than human hearts. Instead of designing the heart like a tube, they've made the chambers seem like an onion with a series of concentric spheres. co*ckroaches are members of the phylum Arthropoda's class Insecta.
The heart of co*ckroach consists of elongated muscular tube lying along mid dorsal line of thorax and abdomen. It is differentiated into funnel shaped chambers with ostia on either side. Blood from sinuses enter heart through ostia and is pumped anteriorly to sinuses again.
Address: Suite 461 73643 Sherril Loaf, Dickinsonland, AZ 47941-2379
Phone: +2678139151039
Job: International Administration Supervisor
Hobby: Dowsing, Snowboarding, Rowing, Beekeeping, Calligraphy, Shooting, Air sports
Introduction: My name is Catherine Tremblay, I am a precious, perfect, tasty, enthusiastic, inexpensive, vast, kind person who loves writing and wants to share my knowledge and understanding with you.
We notice you're using an ad blocker
Without advertising income, we can't keep making this site awesome for you.
