Bones, Muscles and Skin
Science

The second layer of skin that contains blood vessels, nerves, sweat glands, and hair follicles
Dermis
The second layer of skin that contains blood vessels, nerves, sweat glands, and hair follicles. Dermis. The dermis is the skin layer that supports and nourishes the outer layer while housing important structures like hair follicles and sweat glands.

The glands and hormones that regulate body conditions and growth, like the thyroid
Endocrine system
The glands and hormones that regulate body conditions and growth, like the thyroid. Endocrine system. The endocrine system is a network of glands that produce hormones to control many important body functions.

The system, including the skin, that separates the body from the outside environment
Integumentary system
The system, including the skin, that separates the body from the outside environment. Integumentary system. The integumentary system is the body's first line of defense, protecting it from harm and helping regulate temperature.

All the bones in the body that support it, help it to move, and protect internal organs
Skeletal system
All the bones in the body that support it, help it to move, and protect internal organs. Skeletal system. The skeletal system is the framework of bones that supports the body, allows movement, and protects organs.

An involuntary muscle that controls internal organs like the stomach and intestines
Smooth muscle
An involuntary muscle that controls internal organs like the stomach and intestines. Smooth muscle. Smooth muscle is a type of muscle that works automatically to manage movements in internal organs without conscious control.