organ systems

how many organ systems does the human body have?

It has a 11 main organ systems

What are the main organ systems

• Integumentary system

• Skeletal system

• Muscular system

• Digestive system

• Respiratory system

• Circulatory system

• Nervous system

• Endocrine system

• Excretory system

• Reproductive system

• Lymphatic system

what does the integumentary system involves

• skin

• hair

• nails

• glands

what does the integumentary system do?

• Covers and protects the body

• The glands help control body temperature

what is the largest organ in the body

the skin

what are the 2 different layers of tissues that make up the skin

• epidermis

• dermis

what does the epidermis do

• prevents bacteria and viruses from entering the body

• makes vitamin D when exposed to the sun

what does the dermis made up of

• connective tissue

• muscle tissue

• nervous tissue

what does the skeletal system involve?

• Bones

• Cartilage

what does the skeletal system do?

• supports the body

• allows movement to happen

• protects the body

what does the muscular system involve?

• skeletal muscle

• smooth muscle

• cardiac muscle

• tendons

• ligaments

skeletal muscle

is

what does tendons do

they connect muscles to bone

what do ligaments do

they connect muscle to bone

what does the muscular system do?

• works with the skeletal system to provide movement

• moves materials within the body

what does the digestive system involve?

• mouth

• esophagus

• stomach

• pancreas

• gall bladder

• liver

• intestines

• rectum

what does the digestive system do?

• does the ingestion and digestion

• absorption of nutrients

• elimination of solid waste

what tissues is the stomach made up of

• Epithelial

• Connective

• Nervous

• Muscle

what does the respiratory system involve?

• nose

• mouth

• trachea

• lungs

• bronchi

• bronchioles

• alveoli

• diaphragm

what does the respiratory system do?

• exchange of gases

what are alveoli

what are alveoli made up of

A thin layer of epithelial tissue

what does the circulatory system involve?

• heart

• blood vessels

• blood

what does the circulatory system do?

• controls body functions

• coordinates responses and activities

what is the heart

it is a muscular pump that supplies blood to all parts of the body

how many times does the heart beat in an average lifetime

3.5 billion times

what does the heart do

It delivers blood to the lungs, the heart itself, and to the rest of the body

what are the 4 chambers of the heart

• Left atria

• Right atria

• Left ventricle

• Right ventricle

what does the endocrine system involve?

• glands (pituitary, hypothalamus, thyroid, adrenals)

• pancreas,

• ovaries (females)

• testes (males)

what does the endocrine system do?

• controls growth and development

• controls metabolism

what does the excretory system involve?

• skin

• kidney

• bladder

• ureter

• urethra

what does the excretory system do?

elimination of wastes

what does the reproductive system involve?

In females: ovaries, fallopian tubes, vagina, uterus

In males: testes, epididymis, vas deferens, penis, urethra

what does the reproductive system do?

reproduction

what does the lymphatic system involve?

• white blood cells

• thymus

• spleen

• lymph nodes

what does the lymphatic system do?

• protects body from disease

• circulates fluid called lymph

• absorbs and transports fats

what is the lung made up of

• Connective tissue

• Epithelial tissue