Muscle Tissue Physiology

Which function of the muscular system directly contributes to changes in the volume of the chest cavity during breathing?

What is the primary role of smooth muscles in the circulatory system?

Which type of muscle is characterized as striated and under voluntary control?

Peristalsis, facilitated by smooth muscles, is essential for which bodily function?

The coordinated function of smooth and skeletal muscles is crucial for which process?

If a person is standing perfectly still, which function of the muscular system is primarily responsible for maintaining this posture?

Which of the following muscle types is found in the heart and is responsible for pumping blood?

Which muscle type is also known as 'involuntary'?

Mobility via Muscles

Muscles in Circulation

Respiration & Diaphragm

Muscles in Urination

Section 1 focuses on the physiology of muscle tissues.
Objectives include defining physiology, describing the functions of the muscular system, and identifying different types of muscles.

Defining Physiology

Physiology is the study of the functions and mechanisms of the human body.

Functions of the Muscular System

Mobility occurs when muscles contract, contributing to gross and fine movements.
Posture is maintained by skeletal muscles, helping keep the body in the correct position when sitting or standing.
Circulation involves the heart pumping blood throughout the body.
Smooth muscle in the arteries and veins plays a role in blood circulation.
Respiration occurs when the diaphragm contracts, pushing downwards and enlarging the chest cavity, allowing the lungs to fill with air.
When the diaphragm muscle relaxes, it pushes air out of the lungs.
Digestion involves smooth muscles in the gastrointestinal tract controlling the process.
Food moves through the digestive system through peristalsis, a wave-like motion.
Muscles in the walls of hollow organs contract and relax, pushing food through the oesophagus into the stomach.
Digested food moves from the stomach to the intestines through peristalsis.
More muscles contract to pass stool out of the body.
Urination requires the urinary system which comprises both smooth and skeletal muscles.
Muscles and nerves work together to hold and release urine from the bladder.

Types of Muscles

Three types include skeleton, smooth and cardiac.
Skeletal muscles are striated and voluntary.
Smooth muscles are non-striated, involuntary, and plain.
Cardiac muscles are striated and involuntary.

Explore muscle tissue physiology, including its functions and mechanisms. Learn about the muscular system's role in mobility and posture. Understand how muscles aid circulation, respiration and digestion.