Various Sensory SystemsBy Brianna Duncan Chandler SnowStephanie York

Receptors Mechanoreceptors- Responds to mechanical person or

distortion (physically touching the skin) Thermoreceptors- neurons that are sensitive to

change in temperature Chemoreceptors-changes chemical signal into action

potential Pain Receptors- cutaneous(skin), somatic (Joint and

bones), and visceral (body organs) send noxious signals into brain in response to damage stimuli

Interoreceptors- sensory receptor that detects stimulus within the body

Exteroreceptors- Receives external stimuli

PAIN RECEPTOR

How Hearing worksWhen an organism hears

something the sound wave travels to the inner ear and fluid, cause it to ripple. Hair cells detect the movement and send it to the brain.

EAR DIAGRAM

EYE DIAGRAM

RhodopsinRhodopsin is important because

it stimulates the rods nerve endings causing sight

Purpose of SkeletonProvides structure, facilitates

movement, and protects the human body

Muscular system and skeletal system interaction They create the framework for

the body.The muscles are connected to

the skeleton causing both to move as one.

Muscle ContractionThick filaments are made of myosin

and thin filaments are made of actin.Muscle fibers are stimulated by motor

neurons.During contractions thick filaments

grab onto the think actin filaments forming cross bridges. Myosin pull actin making the sarcomere shorter.

When its fully contracted actin and myosin are completely overlapped .

MUSCLE CONTRACTIONS

Types of Muscle Smooth Muscle Cardiac Muscle Skeletal Muscle

Involuntary Involuntary Voluntary

Composed of elongated spindle shaped cells

Quadrangular Composed of cylindrical fibers

Can be found in hollow visceral organs excluding the heart

Found in the heart Found attached to the skeleton

TYPES OF MUSCLES

Connection between smell and tasteIn most organisms the way food

smells affects its taste. This is because the nose detects the complex odor of the food while the tongue can only detect the taste of salty, sweet, sour, and bitter . The two work together in the brain and preserve the flavor.