video - Levels of Organization

video - Tissues, Part 1: Crash Course  (if you want to watch more about them)

video - Tissues, Part 2: Epithelial Tissue   (class - first 3 mins)

video - Amoeba Sisters - Homeostasis

video - Levels of Organization song (corny but helpful?)

Diagrams used in class:

Different Types of Cells

Osteocytes             osteo = pertaining to bone     cyte = cell

Lipocyte                                                              Adipocyte

lip(o) = fat    (Greek origin)                                                adip(o) = fat, fatty tissue    (Latin origin)

Chondrocytes             chondro = cartilage     cyte = cell   

4 Types of Body Tissues:

Connective Tissue:                                   Epithelial Tissue:

  f - joins, supports, protects,                        f - covers & protects   

  insulates, nourishes, &  cushions                  underlying tissue.             organs.                                               

  ex: blood, bone                                              ex. outer layer of skin, 

                                                                                         lining of intestines

  Muscle Tissue:                                  Nervous Tissue:

 f - produces movement by                    f - sends electrical signals 

  contracting & relaxing                             throughout body.     

  ex: biceps & triceps                            ex. spinal cord, nerves

Organs perform a specific job. 

What is the major function for each of the following organs?(http://www.education.vic.gov.au/school/teachers/teachingresources/discipline/science/continuum/Pages/internalbody.aspx)

The brain

The brain is the control center of the nervous system and is located within the skull. Its functions include muscle control and coordination, sensory reception and integration, speech production, memory storage, and the elaboration of thought and emotion.

The lungs

The lungs are two sponge-like, cone-shaped structures that fill most of the chest cavity. Their essential function is to provide oxygen from inhaled air to the bloodstream and to exhale carbon dioxide.

The liver

The liver lies on the right side of the abdominal cavity beneath the diaphragm. Its main function is to process the contents of the blood to ensure composition remains the same. This process involves breaking down fats, producing urea, filtering harmful substances and maintaining a proper level of glucose in the blood.

The bladder

The bladder is a muscular organ located in the pelvic cavity. It stretches to store urine and contracts to release urine.

The kidneys

The kidneys are two bean-shaped organs located at the back of the abdominal cavity, one on each side of the spinal column. Their function is to maintain the body’s chemical balance by excreting waste products and excess fluid in the form of urine.

The heart

The heart is a hollow, muscular organ that pumps blood through the blood vessels by repeated, rhythmic contractions.

The stomach

The stomach is a muscular, elastic, pear-shaped bag, lying crosswise in the abdominal cavity beneath the diaphragm. Its main purpose is digestion of food through production of gastric juices which break down, mix and churn the food into a thin liquid.

The intestines

The intestines are located between the stomach and the anus and are divided into two major sections: the small intestine and the large intestine. The function of the small intestine is to absorb most ingested food. The large intestine is responsible for absorption of water and excretion of solid waste material.

Organs form organ systems that work together to maintain homeostasis.

Organ Systems:

• skeletal system - bones that make up our skeleton

• muscular system - muscles that move our body

• digestive system - breaking down our food & generating poop

• cardiovascular/circulatory system - heart & blood vessels

• respiratory system - intake & exchange of gasses within our lungs

• nervous system - communication throughout our body w/ our brain

• urinary/excretory system - removing wastes from blood generating pee

• reproductive system - production of reproductive cells

• integumentary/exocrine system - protecting body from injury, disease, & sun

• endocrine system - release hormones into bloodstream

• immune & lymphatic systems - defends the body against infection

homeostasis = ability to keep a stable (unchanging) environment inside our bodies despite changes in the environment

Examples of homeostasis:

A) internal body temperature of 98.6 degrees F.

B) amount of sugar in blood

C) blood pressure

D) amount of acid in blood

E) amount of water inside cells

F) calcium levels in blood

G) breathing patterns

H) getting rid of toxins (harmful chemicals) in blood

I) amount of oxygen in blood

J) fight infections that enter the body