The body’s ability to maintain a stable internal environment despite changes in the external surroundings, primarily through feedback mechanisms such as temperature or pH regulation.

What is the difference between a positive and a negative feedback loop?

A negative feedback loop reverses a change to restore balance (e.g., body temperature control), while a positive feedback loop amplifies a response until an event is completed (e.g., childbirth contractions).

Organic molecules such as carbohydrates, lipids, proteins, and nucleic acids that are essential to the structure and function of living cells.

What are the main stages of the cell cycle?

Interphase (cell growth and DNA replication), mitosis (division of the nucleus), and cytokinesis (division of the cytoplasm).

Organic molecules such as carbohydrates, lipids, proteins, and nucleic acids that are essential to the structure and function of living cells.

Tissue that covers body surfaces, lines internal organs and cavities, and forms glands; functions include protection, absorption, and secretion.

What are the four main types of tissues in the human body?

Epithelial, connective, muscle, and nervous tissues.

A bone-forming cell responsible for producing new bone matrix and aiding in bone growth and repair.

What is the primary function of the skeletal system?

To provide structural support, protect internal organs, enable movement, store minerals like calcium, and produce blood cells within bone marrow.

What happens during muscle contraction according to the sliding filament theory?

Actin and myosin filaments slide past each other, shortening the sarcomere and producing muscle tension, powered by ATP and triggered by calcium ions.

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Yveth Gonzalez

Anatomy physiology weeks 1-6

Question/Term	Answer/Definition
Homeostasis	The body’s ability to maintain a stable internal environment despite changes in the external surroundings, primarily through feedback mechanisms such as temperature or pH regulation.
What is the difference between a positive and a negative feedback loop?	A negative feedback loop reverses a change to restore balance (e.g., body temperature control), while a positive feedback loop amplifies a response until an event is completed (e.g., childbirth contractions).
Biomolecule	Organic molecules such as carbohydrates, lipids, proteins, and nucleic acids that are essential to the structure and function of living cells.
The smallest structural and functional unit of life is the ________.	cell
What are the main stages of the cell cycle?	Interphase (cell growth and DNA replication), mitosis (division of the nucleus), and cytokinesis (division of the cytoplasm).
Biomolecule	Organic molecules such as carbohydrates, lipids, proteins, and nucleic acids that are essential to the structure and function of living cells.
Epithelial Tissue	Tissue that covers body surfaces, lines internal organs and cavities, and forms glands; functions include protection, absorption, and secretion.
What are the four main types of tissues in the human body?	Epithelial, connective, muscle, and nervous tissues.
Osteoblast	A bone-forming cell responsible for producing new bone matrix and aiding in bone growth and repair.
What is the primary function of the skeletal system?	To provide structural support, protect internal organs, enable movement, store minerals like calcium, and produce blood cells within bone marrow.
What happens during muscle contraction according to the sliding filament theory?	Actin and myosin filaments slide past each other, shortening the sarcomere and producing muscle tension, powered by ATP and triggered by calcium ions.

Created by: user-1990312

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