Lecture 1 Flashcards
Dorsal
Towards the top
Ventral
Towards the bottom
Anterior
Towards the front
Posterior
Towards the back
Caudal
But end
Cranial
Head end
Midsagittal plane???
Cut in half lengthwise
Transverse plane
Cut in half width wise
Frontal plane
Cut in half
Top from bottom
Cross section
Cutting straight through something to create a full view of its entirety
Cells
The building blocks of life
Tissues
Cells of similar structure/function grouped together
Organs
Contain 2 or more tissue types
Carry out more complex functions
Examples of organs
Pancreas
Liver
Heart
Kidney
Lungs
Brain
Intestine
Systems
Several organs working together to accomplish a common function
Interrelated parts
Most cells contain
A nucleus
Cytoplasm
Red blood cells do not have what, except for
Nuclei
Birds
Nuclei contain
Genes and chromosomes to control a cell’s function
Cytoplasm
Contains all organelles within the cell
Cell membrane
Lipid bilayer separating a cell from its environment
Nuclear pore
Passage into the nucleus
Chromatin
Tightly packed Protein and DNA
Nuclear envelope
Contains nuclear region
Nucleolus
Ribosome synthesis
Genes
Region of DNA that codes for a function
Chromosomes
DNA molecule (tightly packed double strand of genetic info)
Mitochondria
ATP (energy) is produced here
Ribosomes
Make protein
Endoplasmic reticulum
Transport system
Golgi apparatus
Synthesis, modification, storing, sorting and transport of secretory products
Lysosomes
Degrade proteins, carbs, and Nucleic acids
Which cells contain many lysosomes
White blood cells
ATP
Form of energy for biological processes
Proteins
Polymers of amino acids
Diverse functions
Epithelial tissue
Lines surfaces of the body
Adipose tissue
Fat tissue
Muscle tissue
Made up of contracting fibres to create movement
Nervous tissue
Transmit electrical signals with projections
Blood
Connective tissue make up of cells in a liquid matrix
Cartilage tissue
Connective tissue in a stiff extracellular matrix
Bone
Connective tissue in a hard extracellular matrix
Connective tissue
Padding under skin
External body parts
Skin
Pelage
Hooves
Claws
Horns/antlers
Combs/wattles
Skin
Innate immunity
Physical barrier
Temperature regulation (glands)
Sensing (nerves)
Glands in skin
Sweat glands
Sebaceous glands
Sweat glands
Ducts in skin
Cooling purposes
Exocrine gland
Sebaceous glands
Exocrine gland, connected to hair follicle
Produces sebum for lubrication
Lanolin
Produced from sebaceous gland of wool animals
Moisturizer
Epidermis
Outer layer of cells
No blood
Dermis
Inner layer
Connective tissue
Blood and lymph vessels
Nerves
Glands
Lymph vessels
Carry lymph/fluid?
Underneath the dermis
Adipose tissue
Subcutaneous and fatty tissue
Modified appendages of the skin
Fur, wool, horns, feathers and hooves
Fur
Coat covering of cattle, horses, swine ………..
Wool
The coat covering of sheep
What does it mean if a sheep has been shorn?
The producer has taken of its wool for animal comfort and profit
Feathers are
The body covering of poultry
What is the process by which hens shed their feathers and grow new ones?
Molting
When do hens shed their feathers?
late summer
When do hens grow new feathers?
Winter
What is commercial molting?
Using altered light duration to bring older hens back to laying
Is forced (commercial) molting allowed in Canada?
No
Hoof
Hard covering of toe for protection
Ungulate
Hoofed animal