Homeostasis is the body's ability to maintain a stable internal environment despite external changes, such as regulating temperature, pH, and blood glucose levels.

What are the three main components of a homeostatic control system?

The receptor detects changes, the control center (often the brain) processes information, and the effector produces a response to restore balance.

What is the functional difference between a synovial joint and a fibrous joint?

Synovial joints are freely movable and contain a fluid-filled cavity (e.g. knee, shoulder), while fibrous joints are immovable and held together by dense connective tissue (e.g, skull sutures)

What are the three main steps of skeletal muscle contraction?

Excitation- the neuron stimulates the muscle fiber. Contraction- where actin and myosin filaments slide past each other Relaxation- when calcium ions return to the sarcoplasmic reticulum.

What are the two main types of bone tissue, and how do they differ?

Compact bone is dense and forms the outer layer of bones for strength while Spongy bone is porous and contains red bone marrow for blood cell production.

What is the function of osteoclasts in bone tissue?

Osteoclasts are bone-resorbing cells that break down bone matrix to release calcium into the bloodstream and remodel bone tissue.

What are the four primary tissue types in the human body?

Epithelial, connective, muscle, and nervous tissue. Each specialized for protection, support, movement, and communication.

Which skin layer is composed of keratinized stratified squamous epithelium?

The epidermis, which provides a tough, protective outer covering that prevents water loss and infection.

What is the main function of the mitochondria in a cell?

The mitochondria are the "powerhouse" of the cell, producing ATP through cellular respiration to fuel cellular processes.

What are the four major classes of biomolecules and their basic functions?

Carbohydrates provide energy. Lipids store energy and form membranes. Proteins perform structural and enzymatic roles Nucleic Acids (DNA & RNA) store and transmit genetic information.

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Hayley Lindfors

Physiology (wks 1-6)

Question	Answer
What is Homeostasis?	Homeostasis is the body's ability to maintain a stable internal environment despite external changes, such as regulating temperature, pH, and blood glucose levels.
What are the three main components of a homeostatic control system?	The receptor detects changes, the control center (often the brain) processes information, and the effector produces a response to restore balance.
What is the functional difference between a synovial joint and a fibrous joint?	Synovial joints are freely movable and contain a fluid-filled cavity (e.g. knee, shoulder), while fibrous joints are immovable and held together by dense connective tissue (e.g, skull sutures)
What are the three main steps of skeletal muscle contraction?	Excitation- the neuron stimulates the muscle fiber. Contraction- where actin and myosin filaments slide past each other Relaxation- when calcium ions return to the sarcoplasmic reticulum.
What are the two main types of bone tissue, and how do they differ?	Compact bone is dense and forms the outer layer of bones for strength while Spongy bone is porous and contains red bone marrow for blood cell production.
What is the function of osteoclasts in bone tissue?	Osteoclasts are bone-resorbing cells that break down bone matrix to release calcium into the bloodstream and remodel bone tissue.
What are the four primary tissue types in the human body?	Epithelial, connective, muscle, and nervous tissue. Each specialized for protection, support, movement, and communication.
Which skin layer is composed of keratinized stratified squamous epithelium?	The epidermis, which provides a tough, protective outer covering that prevents water loss and infection.
What is the main function of the mitochondria in a cell?	The mitochondria are the "powerhouse" of the cell, producing ATP through cellular respiration to fuel cellular processes.
What are the four major classes of biomolecules and their basic functions?	Carbohydrates provide energy. Lipids store energy and form membranes. Proteins perform structural and enzymatic roles Nucleic Acids (DNA & RNA) store and transmit genetic information.

Created by: hayley91

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