The Systems of the Human Body

• Can you guess how many different system make up the Human Body?

• Well….the correct number is 11!! 11 different systems all working together for you to function.

• How many do you know out of those 11?

• We will go over all 11 in today’s lecture!

Levels of Organization

• Lets review…What are the levels of organization within a single human body??

• Atoms/Molecules

• Cells

• Tissues

• Organs

• Systems

• Organisms/Individual

Integumentary System

Integumentary System

• Skin, hair, nails, sweat glands, and sebaceous glands.

• Protect underlying tissue, help regulate temp, sensory receptors, and synthesize certain products.

Integumentary System

Integumentary System

•Bones, ligaments, tendons, and cartilage.

• Provides frameworks, protective shield for softer tissue, attachment for muscles, and act together with muscles for movement

• Tissue within the bones produce blood cells, store inorganic salts.

MUSCULAR SYSTEMMUSCULAR SYSTEM

                                  

• All muscles… Smooth, cardiac, and skeletal..

• Force for body movement, help maintain posture, are the main source of body heat.

• Aids in circulation of blood and food throughout the body.

MUSCULAR SYSTEMMUSCULAR SYSTEM

NERVOUS SYSTEMNERVOUS SYSTEM

• Brain, spinal cord, nerves, and sense organs.

• Nerve cells send nerve impulses

• Specialized sensory receptors.

• Some nerves receive/send impulses

• Some carry impulses from the brain or spinal cord to muscles

NERVOUS SYSTEMNERVOUS SYSTEM

NERVOUS SYSTEMNERVOUS SYSTEM

• The basic unit of the nervous system are neurons.

• There are 3 types: sensory, motor, and interneurons!

ENDORCRINE SYSTEM

• Function: Controls growth, development, and metabolism.

• Maintains Homeostasis

• ORGANS- Pituitary, thyroid, parathyroid, and adrenal glands, pancreas, ovaries, testes, pineal gland, and thymus gland

ENDORCRINE SYSTEM

CARDIOVASCULAR SYSTEM

• Includes heart, arteries, veins, capillaries, and blood

• Heart-pump that forces blood through blood vessels.

• Blood- carries oxygen from lungs and nutrients from digestive organs to all body cells

CIRCULATORY SYSTEM

• These are red blood cells!

• They are the most numerous cells in the body.

• These cells transport oxygen.

• The cells actually have no nuclei.

• They live in the human body for about 120 days!

• Heart-pump that forces blood through blood vessels.

• Blood- carries oxygen from lungs and nutrients from digestive organs to all body cells

CIRCULATORY SYSTEM

Lymphatic/Immune Lymphatic/Immune SystemSystem

• Function: Helps to protect the body from disease

• Collects fluid lost from blood vessels & returns the fluid to the circulatory system.

• Structures: White blood cells, thymus, lymph nodes, lymph vessels

Lymphatic/Immune Lymphatic/Immune SystemSystem

Digestive SystemDigestive System

                                                       

• Includes: Mouth, tongue, teeth, salivary glands, pharynx, esophagus, stomach, liver, gallbladder, pancreas, small and large intestine

• Breaks down food to similar forms that can pass through cell membranes to be absorbed.

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Digestive SystemDigestive System

• Materials not absorbed are transported back outside the body. (Primarily the job of your colon)

• Certain digestive organs produced hormones and function as part of the endocrine system.

Digestive SystemDigestive System

The Respiratory System

                                                          

• Includes: Nasal cavity, pharynx, larynx, trachea, bronchi, and lungs

• Function: Takes air in and out and exchanges gases between blood and the air. (O2 in and CO2 out )

The Respiratory System

Excretory/Urinary Excretory/Urinary SystemSystem

Urinary System Urinary System

• Primarily includes kidney, ureters, urinary bladder, and uretha

• Some resources include lungs & skin

• Kidneys remove wastes from blood and assist in maintaining the body’s water and electrolyte balance

• Product is urine  

 

Excretory/Urinary Excretory/Urinary SystemSystem

Reproductive SystemReproductive System

• Ovaries, uterine tubes, uterus, vagina, clitoris, vulva

• Function: Produce and maintain egg cells, receive sperm cells, support development of an embryo and function in birth process

Reproductive SystemReproductive SystemFemaleFemale

• Scrotum, testes, epididymides, vasa deferentia, seminal vesicles, prostate gland, bulbourethral glands, urethra, and penis

• Function: Produce and maintain sperm cells, transfer sperm cells into female reproductive organs.

Reproductive SystemReproductive SystemMaleMale