Notes, summaries, assignments, exams, and exercises for Biology for Primary education

Surgery

Early & Later Complications of CABG and Valve Replacement/Repair

Radical & Palliative CHD: 1 paper

Large Patch:

• Heart Surgery Complications (2 W CABG + Valves)
• Aortic Aneurysm Surgery
• Fallot
• Ind Pericardial Biopsy Drainage
• Aortic Coarctation
• Cardiac Tumors
• Congenital Heart Disease
• Cardiac Pulmonary Bypass
• Mitral Regurgitation Surgery

Vascular:

Eyes

Orbital Hematoma (Black Eye)

An orbital hematoma, commonly known as a black eye, results from a blow to the area surrounding the eye, which causes capillary bleeding.

Signs & Symptoms:

• Noticeable swelling and discoloration around the orbit.

Orbital Fracture

An orbital fracture is caused by a direct blow to the eyeball, forcing it posteriorly. This action compresses the orbital fat until a blowout rupture occurs to the floor of the orbit.

Signs & Symptoms:

• Diplopia (double vision)
• Restricted eye movement
• Downward displacement of the eye

Hyphema

A hyphema is a collection of blood in the anterior chamber of the eye, typically resulting from blunt trauma to the eye. This is a major eye injury that can lead to serious problems.

Signs & Symptoms:

Lung Cancer Impact: Eastern Europe and North America have the highest lung cancer incidence rates. Men are disproportionately affected, with rates 76% higher in men than in women in Eastern Europe and 69% higher in North America. However, incidence in women is increasing. The 5-year survival rate remains very low.

Risk Factors: Smoking accounts for a substantial portion of lung cancer deaths: 80% in men, 75% in women, and contributes to 17% of lung cancer cases in non-smokers. Smoking is also linked to 28% of all cancer deaths. Other risk factors include asbestos, radon exposure (mining or environmental), a diet low in vitamins A, C, E, and beta-carotene, as well as genetic and familial factors.

Lung Cancer Control: Effective control strategies...

Effects of Heat on Proteins in Food Processing

Functional Properties of Proteins in Foods

• Mass Hydration: Formation
• Solubility: Emulsification
• Viscosity: Foam formation
• Gelification: Flavoring capture
• Texture: Interaction with other food components

Denaturation of Proteins

Physics

Heating, cooling, mechanical treatment, hydrostatic pressure, radiation.

Chemistry

Acids, bases, metals, organic solvents.

Effects of Protein Denaturation

• Changes in solubility by exposure of hydrophilic or hydrophobic peptide units
• Changes in water absorption capacity
• Loss of biological activity
• Increased risk of chemical attack by exposure of other peptide bonds
• Changes in viscosity of solutions
• Decreased ability of crystallization

Color Changes

Red purple myoglobin converts to metmyoglobin...

The Discovery of Cells

a) In 1655, scientist Robert Hooke made an observation while examining a dried section of cork tree with a crude light microscope. He observed small chambers and named them "cells."

What are Cells?

b) The cell is known as the basic structural and functional unit of life, as all organisms are composed of cells.

c) Single-celled organisms are called unicellular (e.g., amoeba), while those having more than one cell are called multicellular.

Functions of Cells

d) All basic chemical and physiological functions of living beings - for example, repair, growth, movement, immunity, communication, and digestion - are carried out inside the cells.

Structure of a Cell

e) Cells are mostly round, spherical, or elongated. Some cells are quite...

The Nervous System

The nervous system receives information from the receptors, processes and coordinates it, and generates orders to the effectors.

Central Nervous System (CNS)

The central nervous system coordinates all the body's functions. It is formed by the encephalon and the spinal cord.

The Encephalon

The encephalon is protected by the skull or cranium and by three membranes, the meninges, between which a liquid called the cerebrospinal fluid circulates. This liquid protects the encephalon from knocks and blows. The encephalon is divided into three parts: the brain, the cerebellum, and the brainstem.

• The brain is divided into two hemispheres, separated by a fissure. Its surface, called the cerebral cortex, is rough and full of folds and furrows,

Full Crown Veneer

Indications:

• Extensive destruction from caries or trauma
• Endodontically treated teeth
• Existing restorations
• Correction for occlusal plane

Contraindications:

• Less than maximum retention
• Esthetics

Advantages:

• Strong
• High retentive quality
• Easy to obtain
• Adequate resistance form

Disadvantages:

• Removal of large amount of tooth structure
• Adverse effect on tissues
• Vitality testing not readily feasible
• Display of metal

Porcelain-Fused-to-Metal (PFM) Crown

Indications:

• Esthetics if all-ceramic is contraindicated
• Gingival involvement

Contraindications:

• Large pulp chamber
• Intact buccal wall

Advantages:

• Superior esthetics compared to complete cast crown

Disadvantages:

• Removal of substantial tooth structure
• Subject to fracture
• Difficult to obtain accurate occlusion
• Shade

Two-Compartment IV Bolus Model

The two-compartment intravenous (IV) bolus model describes the kinetics of drugs that do not distribute instantaneously throughout the body. Following rapid IV injection, drugs distribute quickly into a central compartment (blood/well-perfused tissues) and slowly into a peripheral compartment (tissues), displaying a biexponential plasma concentration decline over time.

Compartment Definitions

• Central Compartment (V_c): Blood and highly perfused tissues (liver, kidneys, heart). Elimination mainly occurs here.
• Peripheral Compartment (V_p): Poorly perfused or slowly equilibrated tissues (muscles, adipose, skin).

Biexponential Decline

The plasma level-time plot is not a straight line on a semi-log scale; it shows a rapid...

__________ 1. In sexual reproduction of fungi, spores are produce By mitosis.

__________ 2.Yeast is a rapidly growing, asexually reproducing Stage of some types of fungi.

__________ 3.Fungi form mutualistic symbiotic associations with Other organism.

__________ 4.Fungi play important ecological roles by decomposing Organic matter and by

breaking down and absorbing minerals From rocks and soil.

__________ 6.All fungi are helpful.

__________ 7.Plants are multicellular eukaryotes whose cells have cell membrane made of

cellulose.

__________ 8.Reproduction in seed plants is characterized by a Greatly reduced gametophyte

and a dominant sporophyte.

__________ 9. The flowers of many gymnosperms are adapted for Pollination by wind or by

animals.

__________ 10.Although...