What is the order of muscle tissue?

What is the order of muscle tissue?

Molecular level — actin and myosin. Microscopic level — sarcomere and myofibrils. Cell level — myoblasts and myofibers. Tissue level — neuromuscular junctions and fascicles. Organ level — major skeletal muscles of the body.

What are the layers of muscle tissue?

Smooth muscle is non-striated and lacks myofibrils.

Skeletal muscle is surrounded by three connective tissue layers: endomysium, perimysium, and epimysium.

Cardiac muscle has less striation, one to two centrally located nuclei in each myofiber, abundant intercalated disks, and Purkinje fibers.

What are the 4 muscle tissues?

Chapter 4 – Muscle Tissue

• Skeletal muscle cells – striated, voluntary control.
• Cardiac muscle cells – striated, involuntary control.
• Smooth muscle cells – nonstriated, involuntary control.

What is the structure of the muscle tissue?

The muscular tissues are bundled together and surrounded by a tough connective tissue similar to cartilage known as epimysium. The bundle of nerve cells that run in long fibers called fascicles are surrounded by the epimysium. The fascicles are surrounded by a protective layer known as perimysium.

What are the steps of muscle contraction?

Terms in this set (7)

1. Action potential generated, which stimulates muscle.
2. Ca2+ released.
3. Ca2+ binds to troponin, shifting the actin filaments, which exposes binding sites.
4. Myosin cross bridges attach & detach, pulling actin filaments toward center (requires ATP)
5. Muscle contracts.

What are the three types of muscle tissue?

The three main types of muscle include:

• Skeletal muscle – the specialised tissue that is attached to bones and allows movement.
• Smooth muscle – located in various internal structures including the digestive tract, uterus and blood vessels such as arteries.
• Cardiac muscle – the muscle specific to the heart.

Which produces the most energy for contraction?

Adenosine Triphosphate (ATP) is the immediate source of (chemical) energy for muscle contraction.

What are the 3 types of muscular tissue?

What are the main features of a muscle tissue?

All muscle tissues have 4 characteristics in common:

• excitability.
• contractility.
• extensibility – they can be stretched.
• elasticity – they return to normal length after stretching.

What are the characteristics of all muscle tissues?

Muscle Tissue Characteristics All muscle tissues share basic characteristics 1.Excitability 2.Contractility 3.Elasticity 4.Extensibility 2 Muscle Tissue Types Skeletal Cardiac Smooth Muscle Comparison Chart Skeletal Cardiac Smooth

What is the function of smooth muscle tissue?

Smooth muscle tissue contraction is responsible for involuntary movements in the internal organs. It forms the contractile component of the digestive, urinary, and reproductive systems as well as the airways and blood vessels. Each cell is spindle shaped with a single nucleus and no visible striations (Figure 4.4.1 – Muscle Tissue).

What is the arrangement of skeletal muscle tissue?

Skeletal muscle tissue is arranged in bundles surrounded by connective tissue. Under the light microscope, muscle cells appear striated with many nuclei squeezed along the membranes.

What is the difference between cardiac muscle and smooth muscle cells?

(b) Smooth muscle cells have a single nucleus and no visible striations. (c) Cardiac muscle cells appear striated and have a single nucleus. From top, LM × 1600, LM × 1600, LM × 1600. (Micrographs provided by the Regents of University of Michigan Medical School © 2012)