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Located in the brain, responsible for complex behaviors, learning, and memory.

Located in the brain, responsible for coordination and balance.

Located in the brainstem, responsible for autonomic control of heart rate and breathing.

Main artery carrying blood from the left ventricle of the heart to the rest of the body.

Carries deoxygenated blood from the right ventricle to the lungs for oxygenation.

Chamber of heart responsible for pumping oxygenated blood to the body.

Chamber of heart responsible for pumping deoxygenated blood to the lungs.

Outer layer of the kidney responsible for filtering blood and forming urine.

Inner layer of the kidney that forms the urine-concentrating mechanism.

Tiny air sacs in the lungs where gas exchange occurs.

Major air passages of the lungs that diverge from the windpipe.

Muscular tube connecting the throat to the stomach, conducts food and liquids.

The largest stomach compartment in ruminants, involved in microbial fermentation.

Digestive organ where most chemical digestion and nutrient absorption occurs.

Absorbs water and forms feces, includes the colon and rectum.

The thigh bone, longest and strongest bone in the body.

Shoulder blade, provides attachment for several shoulder muscles.

Bone of the upper arm or forelimb, forms joints with the shoulder and elbow.

Large organ that processes nutrients, detoxifies, and produces bile.

Produces digestive enzymes and hormones such as insulin and glucagon.

Stores and concentrates bile, releasing it into the small intestine to aid digestion.

Organ involved in the production and removal of blood cells and forming part of the immune system.

Windpipe, conducts air to and from the lungs.

Bean-shaped organ that filters waste products from the blood and excretes them in urine.

The longest muscle in the body, it flexes, abducts, and laterally rotates the thigh.

Muscle of the upper arm that flexes the elbow and rotates the forearm.

Calf muscle that flexes the knee and foot, important for walking, running, and jumping.

Voice box, responsible for sound production and protecting the trachea against food aspiration.

Largest vein in the body, carries deoxygenated blood to the heart.

Muscle that separates the thoracic and abdominal cavities and is crucial for respiration.

Layer at the back of the eyeball that contains cells sensitive to light and triggers nerve impulses to the brain.

Spiral-shaped, fluid-filled inner ear structure; it transforms sound into nerve impulses.

A hard surface in the mouth of certain animals, like cows, that aids in grinding plant-based food.

Female reproductive organs that produce eggs and hormones like estrogen and progesterone.

Male reproductive organs that produce sperm and testosterone.

Lower jawbone, the only movable bone of the skull, holds the lower teeth.

Cell that transmits nerve impulses; fundamental unit of the nervous system.

Outermost layer of skin, providing a waterproof barrier and creating skin tone.

Cells responsible for carrying oxygen throughout the body.

Cells of the immune system, involved in defending the body against both infectious disease and foreign invaders.

Hard surface in the mouth of ruminants that along with the lower incisors aids in the grinding of plant material.

Cell fragments that are essential for blood clotting.

Muscular tissue of the heart, responsible for the pumping action of the heart.

Master gland of the endocrine system, secretes hormones that regulate growth and other glands.

Part of the brain responsible for hormone production and regulating body temperature, hunger, moods, and the circadian rhythm.

Colored part of the eye, regulates the amount of light that enters the eye by changing the size of the pupil.

Opening in the center of the iris that allows light to enter the eye.

Glands located above the kidneys that produce hormones like adrenaline and cortisol.

Produces hormones that regulate the body's metabolic rate and calcium levels.

Small bean-shaped structures that are part of the lymphatic system and filter harmful substances from the lymph.

Part of the lymphatic system, located in the throat; they help fight off infection by trapping pathogens.