biology animal systems

Circulatory System

responsible for the transportation of oxygen, nutrients, and hormones throughout the body. It consists of the heart, blood vessels, and blood.

digestive system

System that breaks down food into nutrients that can be absorbed by the body, consisting of organs such as the stomach, small intestine, and liver.

endocrine system

What is the system responsible for producing and secreting hormones into the bloodstream to regulate body functions? It controls growth, metabolism, reproduction, and mood.

excretory system

The system in the body responsible for eliminating waste products and excess water from the body.

integumentary system

System responsible for protecting the body from external damage and regulating body temperature through sweat production, hair, and oil secretion.

lymphatic system

The body's drainage system that helps remove excess fluid and waste from tissues. It also helps fight infections by producing and transporting white blood cells.

muscular system

The network of muscles in the human body that allows movement, maintains posture, and generates heat. It is composed of three types of muscles: skeletal, smooth, and cardiac. Skeletal muscles are voluntary and attached to bones, while smooth and cardiac muscles are involuntary and found in organs and the heart, respectively.

nervous system

The complex network of nerves and cells that transmit signals between different parts of the body. It is responsible for controlling and coordinating all bodily functions and responses to external stimuli.

respiratory system

responsible for the exchange of gases between the body and the environment. It consists of the lungs, trachea, bronchi, and alveoli, and works by inhaling oxygen and exhaling carbon dioxide.

reproductive system

The system responsible for producing and transporting gametes (sperm and egg) for fertilization. It consists of gonads (testes in males and ovaries in females), ducts (vas deferens and fallopian tubes), and accessory organs (penis and uterus). Hormones like testosterone and estrogen regulate reproductive functions.

skeletal system

System that provides support, protection, and movement for the body. Made up of bones, cartilage, and ligaments. Produces blood cells and stores minerals.