The body’s ability to maintain a stable internal environment despite changes inside or outside the body using feedback loops that detect changes, process information, and trigger responses to bring conditions back to normal.

Biomolecules are organic molecules made by living organisms that are essential for structure, energy, and function in the body. mostly built from carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), and sulfur (S) or CHNOPS.

The cell is the basic structural and functional unit of all living organisms — the smallest unit that can carry out all life processes.

Cell growth and development

processes by which cells increase in size, divide, and specialize (differentiate) to perform specific functions — allowing the body to grow, repair, and maintain itself.

A tissue is a group of similar cells that work together to perform a specific function. Tissues form the next structural level above cells and combine to make organs.

Epithelial Tissue-Covers body surfaces, lines organs & cavities, forms glands. Connective Tissue- supports, binds, protects, stores energy. Muscle Tissue-Contracts to produce movement. Nervous Tissue -Sends and processes electrical impulses.

The skin is the body’s largest organ — part of the integumentary system. it protects the body, regulates temperature, prevents dehydration, and allows sensory perception.

Epidermis- Outermost layer made of epithelial tissue. Dermis- Middle layer made of connective tissue. Subcutaneous (Hypodermis)Deep layer made of loose connective & adipose tissue.

Functions of the skin

Protection • Sensation • Temperature control • Excretion • Vitamin D

Bone (Osseous Tissue)

Hard, dense connective tissue that supports, protects, and stores minerals

Smooth, flexible connective tissue that cushions joints and forms parts of the skeleton before bones harden

The skeleton is the framework of bones and cartilage that supports the body, protects organs, enables movement, and produces blood cells.

Skull, vertebral column, rib cage, sternum Protects brain, spinal cord, heart, lungs.

Appendicular Skeleton

Limbs, shoulder girdle, pelvic girdle. Movement and locomotion

An articulation (joint) is the point where two or more bones meet, allowing movement and support in the skeleton.

Fibrous (Synarthroses)- no movement Cartilaginous (Amphiarthroses)-Slight movement Synovial (Diarthroses) Freely movable

Thin filament pulled during contraction

Thick filament that pulls actin using ATP - energy for cross-bridge movement and release

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Eli Pino

Week 7

Term	Definition
Homeostasis	The body’s ability to maintain a stable internal environment despite changes inside or outside the body using feedback loops that detect changes, process information, and trigger responses to bring conditions back to normal.
Biomolecules	Biomolecules are organic molecules made by living organisms that are essential for structure, energy, and function in the body. mostly built from carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), and sulfur (S) or CHNOPS.
Cells	The cell is the basic structural and functional unit of all living organisms — the smallest unit that can carry out all life processes.
Cell growth and development	processes by which cells increase in size, divide, and specialize (differentiate) to perform specific functions — allowing the body to grow, repair, and maintain itself.
Tissues	A tissue is a group of similar cells that work together to perform a specific function. Tissues form the next structural level above cells and combine to make organs.
4 types of tissues	Epithelial Tissue-Covers body surfaces, lines organs & cavities, forms glands. Connective Tissue- supports, binds, protects, stores energy. Muscle Tissue-Contracts to produce movement. Nervous Tissue -Sends and processes electrical impulses.
Skin	The skin is the body’s largest organ — part of the integumentary system. it protects the body, regulates temperature, prevents dehydration, and allows sensory perception.
Layers of skin	Epidermis- Outermost layer made of epithelial tissue. Dermis- Middle layer made of connective tissue. Subcutaneous (Hypodermis)Deep layer made of loose connective & adipose tissue.
Functions of the skin	Protection • Sensation • Temperature control • Excretion • Vitamin D
Bone (Osseous Tissue)	Hard, dense connective tissue that supports, protects, and stores minerals
Cartilage	Smooth, flexible connective tissue that cushions joints and forms parts of the skeleton before bones harden
Skeleton	The skeleton is the framework of bones and cartilage that supports the body, protects organs, enables movement, and produces blood cells.
Axial Skeleton	Skull, vertebral column, rib cage, sternum Protects brain, spinal cord, heart, lungs.
Appendicular Skeleton	Limbs, shoulder girdle, pelvic girdle. Movement and locomotion
Joints	An articulation (joint) is the point where two or more bones meet, allowing movement and support in the skeleton.
Types of joints	Fibrous (Synarthroses)- no movement Cartilaginous (Amphiarthroses)-Slight movement Synovial (Diarthroses) Freely movable
Nerve impulse	Action Potential
Actin	Thin filament pulled during contraction
Myosin	Thick filament that pulls actin using ATP - energy for cross-bridge movement and release

Created by: elipino44

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