Human Body Systems and Survival Needs

Survival Needs and Body Activities

• Five essential survival needs: communication, intake of oxygen, intake of raw materials and elimination of waste, protection, and body movement
• Corresponding body activities: transport systems, nervous and endocrine systems, ingestion of nutrients, elimination of waste, protection against external environment and microbial infection, and body movement

Communication

• Internal communication: nervous and endocrine systems involved in maintaining homeostasis and regulating vital body functions
• External communication: special senses, verbal and non-verbal activities, and nervous system

Transport Systems

• Blood, circulatory system, and lymphatic system involved in transporting oxygen, nutrients, and waste products
• Heart: a muscular sac that pumps blood throughout the body, maintaining blood pressure, and beats 65-75 times per minute at rest
• Lymphatic system: consists of lymph vessels, lymph nodes, and lymph, which filters out microbes and other materials, and returns to the bloodstream

Internal Communication

• Nervous and endocrine systems involved in maintaining homeostasis and regulating vital body functions
• Pathogenesis: main processes causing illness or disease, including inflammation, tumours, abnormal immune mechanisms, thrombosis, embolism, and infarction

Disease-Associated Terminology

• Acute: disease with sudden onset, often requiring urgent treatment
• Acquired: disorder that develops after birth
• Chronic: long-standing disorder that cannot usually be cured
• Congenital: disorder present at birth
• Sign: abnormality seen or measured by others
• Symptom: abnormality described by the patient
• Syndrome: collection of signs and symptoms that tend to occur together

Atomic Structure and Chemical Bonds

• Atoms consist of protons, neutrons, and electrons
• Electrons in outermost shell are important for chemical reactions
• Isotopes: atoms of an element with different numbers of neutrons in the nucleus, affecting atomic weight

Biological Molecules

• Carbohydrates: composed of carbon, oxygen, and hydrogen, with carbon atoms arranged in a ring
• Glucose: main form of sugar used by cells, can be broken down in the presence or absence of oxygen
• Polysaccharides: complex carbohydrates formed by linking monosaccharides together
• Proteins: composed of amino acids, which contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulphur
• Importance of biological molecules: provide energy, form structures, and act as receptors on cell surfaces

This quiz covers the human body systems that support survival needs, including transport, communication, and more. Test your knowledge of the circulatory, nervous, and endocrine systems.