Animal Physiology Flashcards
Canines
Pointed sharp teeth used for tearing food
Incisors
Chisel-like teeth used for cutting and biting
Premolars
Flat teeth used for grinding
Pig dental formula
2( i:3/3 c:1/1 p:4/4 m:3/3)
Dental formula of a herbivore
2( I:0/3 c:0/2 p:3/3 m:3/3)
Peristalsis
Food entering the oesophagus is moved along to the stomach by a muscular wave of contraction
A ruminant animal
Has a stomach that is modified and adapted for the digestion of cellulose
4 chambers of a ruminant stomach
Rumen reticulum omasum and abomasum
Function of the rumen
Contains m.os that digest cellulose
Function of the reticulum
Regurgitating partially digested material from the rumen back to the mouth for further chewing
Function of omasum
Has many layers of tissue and squeezes food and reabsorbs water and liquid from it.
Function of abomasum
Gastric juices that contain enzymes are secreted here to break down proteins and aid the final stage of digestion
Arteriole
A small branch of an artery
Venule
A small branch of a vein
Selective reabsorption
The process by which the body reabsorbs certain molecules for use in the body by active transport
Cerebral hemispheres
Reasoning, memory, hearing and other senses
Corpus callosum
Nerve fibres that connect left and right hemispheres
Pituitary gland
Secretes hormones
Pons
Connects the cerebrum and cerebellum
Cerebellum
Balance movement muscle coordination
Medulla oblongata
Controls involuntary actions breathing blinking heartbeat
Spinal cord
Nerve fibres that connect the brain to the PNS
Neuron
Nerve cell
Dendrites
Contain receptors that accept impulses from other neutrons