Q: Which chamber of the heart pumps oxygen-poor blood to the lungs?___ Which chamber of the…
A: The human heart is an organ on the left of the midline constituting two-thirds of the mass. The…
Q: Three-chambered hearts with incomplete septa wereonce viewed as being less adapted to circulatory…
A: Heart if found in vertebrates having backbone. It is a muscular organ that pumps blood through blood…
Q: Is Cardiac muscle the muscle of the heart? How does it function?
A: The Muscle is a soft tissue that contains actin and myosin protein filament that are responsible for…
Q: Why is the gap junctions between heart muscle cells play a relevant role in producing a regular…
A: Only the heart contains cardiac muscle tissue. Cardiac muscle contractions are well-coordinated,…
Q: What is the name of the flap of tissue that prevents blood from flowing backward? Mention the name…
A: The human heart is made up of a special type of muscle known as the cardiac muscle. It consists of…
Q: WHich are the properties of cardiac muscle
A: The Muscle is a soft tissue that contains actin and myosin protein filament that are responsible for…
Q: explain the process of Ca2+ induced Ca2+ release in the myocardium. how does this process differ…
A: Calcium ions are stored in the sarcoplasmic reticulum found in the muscle cells. Which is similar to…
Q: what is contraction in cardiac muscle cells in response to
A: Muscle cells are the cells also known as myocytes that help in the formation of muscle tissues. The…
Q: Describe cardiac muscle tissue and compare its structure and physiology to the other types?
A: Muscular tissue or muscle tissues are generally three types: Smooth muscle tissues Skeletal muscle…
Q: Compare the characteristics of skeletal and cardiacmuscle cell contractions.
A: Tissue comprises of structurally and functionally similar cells. It is a level of organization in…
Q: Why should mitochondria be larger and more abundant in cardiac muscle than in skeletal muscle?
A: The Muscle is a soft tissue that contains actin and myosin protein filament that are responsible for…
Q: This diagram shows a _______ and the green things being released into the space are _____. A.…
A: The branch of biology associated with studying the functions of living organisms’ body can be…
Q: Help please
A: Pigs like other mammals have a four-chambered heart. The right side of the heart pumps blood to the…
Q: Describe the common features that determine whysome invertebrates, such as sponges, cnidarians,…
A: The circulatory system carries oxygen, nutrient, and all over cells.
Q: Describe the histology of cardiac muscle tissue, and differentiate ?it from that of skeletal muscle?
A: BASIC INFORMATION MUSCLE It is a type of soft tissue which are found in most of the animals. The…
Q: What are the uses of cardiac troponins?
A: Troponins are a group of protein molecules that are found in skeletal and cardiac muscles. The…
Q: 24.5. Describe using diagrams as appropriate the cardiac cycle.
A: Circulatory system is crucial for normal functioning of body tissues and vital organs for survival…
Q: Discuss how the SA and AV nodes control the contractionsof the heart muscle, as well as how these…
A: A network of specialized muscle cells is present in the walls of the heart. These muscle cells are…
Q: . Erythropoietin is available as a drug. Why would athletesabuse it?
A: Hormones are chemical messengers, that are mainly released by several glands. The hormones travel in…
Q: How does excitation–contraction coupling in cardiac muscle resemble that of skeletal muscle? How is…
A: The calcium ions channels present in the plasma film are momentarily opened because of the…
Q: Explain the origin and conduction of the excitation that leads to a heart contraction. Why is the…
A: Since, there are multiple questions. I have answered the first question only. If you need the…
Q: below. What can we learn from this experiment about the rhythmicity of our cardiac muscle? List…
A: Cardiac muscles are the specialised involuntary muscles observed around the heart and are…
Q: What is the role of Ca2+ in the shape and duration of an action potential. (Cardiac muscle cell)
A: The duration of an action potential for cardiac muscle cell is between 200-250 milliseconds. There…
Q: How many chambered heart does animals like amphibians and reptiles have?
A: Heart Heart is a blood pumping organ of vertebrate animals. The circulation of fluid into the body…
Q: Circulatory System 1. Why are the ventricles more muscular than the atria? 2. What valve prevents…
A: CirculatorySystem: The heart, blood vessels, and blood are all part of the blood circulatory system,…
Q: How many chambers dothe bird heart and themammalian heart have?Concerning temperaturemaintenance…
A: The circulatory system consists of the heart, blood vessels, capillaries, and blood. The heart is…
Q: Trace the flow of blood through a mammalian heart, naming the four chambers and their valves, and…
A: The heart is the most important organ in the body. It is made up of several different types of…
Q: a. When part of the heart muscle dies, how does itheal?b. How would the new tissue affect the…
A: The heart is a vital organ for survival, as it pumps blood throughout the body. The heart is made up…
Q: Describe the conditions at the sarcolemma of cardiac muscle cells at rest.
A: They are connected by intercalated discs. These are striated fibres with a single nuclei. Sarcolemma…
Q: What are cardiac muscles?
A: Muscle is a soft tissue found in most animals. Muscle cells contain protein filaments of actin and…
Q: Where are cardiac muscle cells found in the heart? O myocardium O pericardium O endocardium O great…
A: The heart is the main organ of the circulatory system of the body. It is located behind the…
Q: Discuss that Can cardiac muscle exhibits (normally or under experimental conditions) summation or…
A: Cardiac muscles are defined as the group of involuntary muscles present in the heart. These muscles…
Q: QUESTION 9 What special structure do cardiac muscles have to distinguish it from the other kinds and…
A: Cardiac muscle is also called as heart muscle or Myocardium .It is an involuntary ,striated muscle…
Q: Why would a fourth chamber heart be evolutionarily advantageous to an animal?
A: Introduction:- Birds and mammals, on the other hand, have a four-chambered heart with a fully…
Q: With the help of diagram, show pulmonary circulation in man.
A: The pulmonary circulation is the portion of the circulatory system which carries deoxygenated blood…
Q: What do you mean by cardiac muscles?
A: Muscles are the structures that attach to the bones and enable the movement of the body. There are…
Q: Why does heart rate and contraction force change relative to resting values when the frog's heart…
A: The heart of the frog has three chambers, one ventricle, and two atria. Because there is only a…
Q: What type of cardiac rhythm is this??
A: Electrocardiogram (ECG): This is a simple test. this test can be used to check: -Heart's rhythm…
Q: Why, even thoough theyhave an open circulatorysystem, can flying insects likeflies beat their wings…
A: A circulatory system facilitates the transport of molecules from one part of the body to another by…
Q: What are three anatomic or physiologic differences between skeletal muscle and cardiac muscle?
A: The biological level of the organization is a hierarchy in which the living thing and structures are…
Q: Coordinated contractions of cardiac muscle are controlled by pacemaker cells, allow for your heart…
A: The pacemaker cells or SA node generate slow positive increase in voltage across the cells membrane…
Q: In a study of heart valve functions, it is necessary to inject a dye intothe right atrium of the…
A: Heart has valves Tricuspid valve: located between right atrium and right ventricle. Pulmonary valve…
Q: what circulatory System loops between the heart and the lungs?
A: The cardiovascular system is a circulatory system that helps to transport oxygen, nutrients,…
Q: Double-loop circulatory systems are found in adult amphibians, reptiles, birds, and mammals.…
A: The double-circulatory system passes the blood twice through the heart, per circuit. The…
Q: Do fishes present an openor closed circulatory system?How many chambers does afish heart have? How…
A: Introduction: Fish belongs to Pisces class of Phylum Chordata. It has a skin with scales covering…
Why do the cardiac muscles cells demonstrate
autorhythmicity?
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
- Why can we say that cardiac muscle contraction is graded?The plasma membranes of adjacent cardiac muscle cells are connected via ____________, in which ____________ tie the cells together and ____________allow current (ions) to flow from one cell to the next (electrical coupling).Explain why Purkinje fibers conduct action potentials morerapidly than other cardiac muscle cells
- Why is the plateau phase important in cardiac muscle cells?Contrast and compare the structure of cardiac muscle with skeletaland smooth muscle?What is the smallest current required to produce a contraction (the threshold current) in the human muscle? What proportion of the fibers in the muscle do you think were contracting to produce a small response?
![Human Physiology: From Cells to Systems (MindTap …](https://www.bartleby.com/isbn_cover_images/9781285866932/9781285866932_smallCoverImage.gif)
![Human Physiology: From Cells to Systems (MindTap …](https://www.bartleby.com/isbn_cover_images/9781285866932/9781285866932_smallCoverImage.gif)