The Nervous System

Front

Sensory Receptors Noun

---

[sen-suh-ree ri-sep-terz]

Back

Sensory Receptors

---

Specialized cells that take in information from the environment and translate it into electric impulses for the nervous system.

---

Example: The image shows different sensory receptors in the skin, like Merkel's disk for touch, helping students understand how these cells detect stimuli.

Front

Nervous System Noun

---

[nur-vuhs sis-tuhm]

Back

Nervous System

---

The body's network that takes in information from the senses, decides what it means, and then responds to it.

---

Example: The image shows how the brain processes sensory signals and sends motor signals through the nervous system.

Front

Impulses Noun

---

[im-puhl-siz]

Back

Impulses

---

Electrical messages that travel along specialized nerve cells, called neurons, to and from the brain.

---

Example: A neuron diagram showing how electrical impulses travel along nerve cells.

Front

Mechanoreceptors Noun

---

[mek-uh-noh-ri-sep-terz]

Back

Mechanoreceptors

---

A type of sensory receptor that responds to mechanical inputs such as touch, pressure, vibration, and sound.

---

Example: The image shows different mechanoreceptors in the skin, like Merkel's disks and Pacinian corpuscles, which detect touch and pressure.

Front

Thermal Receptors Noun

---

[thur-muhl ri-sep-terz]

Back

Thermal Receptors

---

Sensory receptors that detect changes in temperature, allowing the body to sense hot and cold.

---

Example: The image shows how thermal receptors in the skin detect temperature changes, with diagrams indicating warm and cold receptor locations.

Front

Epidermis Noun

---

[ep-i-dur-mis]

Back

Epidermis

---

The thin, protective, outermost layer of the skin that is visible to the eye.

---

Example: The image shows the epidermis as the outer layer of skin, highlighting its role in protecting sensory receptors.

Front

Dermis Noun

---

[dur-mis]

Back

Dermis

---

The layer of skin located beneath the epidermis, containing nerves, blood vessels, glands, and hair follicles.

---

Example: The dermis is shown beneath the epidermis, with labeled nerves and receptors, explaining its role in sensation.

Front

Sensory Neuron Noun

---

[sen-suh-ree noor-on]

Back

Sensory Neuron

---

A type of neuron that carries information from sensory receptors toward the central nervous system.

---

Example: A diagram of a neuron showing its structure, relevant to how sensory neurons transmit signals.

Front

Motor Neuron Noun

---

[moh-ter noor-on]

Back

Motor Neuron

---

A type of neuron that carries messages from the central nervous system to muscles to cause movement.

---

Example: The image shows how a motor neuron transmits signals to muscle fibers, causing movement.

Front

Eardrum Noun

---

[eer-druhm]

Back

Eardrum

---

A thin membrane located in the middle ear that vibrates when it is struck by sound waves.

---

Example: The image shows the eardrum in the middle ear, labeled clearly to demonstrate its location and role in hearing.