Bio quiz

Digestive tract

Digestive tract

organs that food passes through

Digestive system

these organs:tract + liver, pancreas, gallbladder etc

Peristalsis

muscle contraction that moves food along digestive tract

Chyme

liquid mixture of broken down food and acids/enzymes

Boulus

once your done chewing food, the stomach liquid + acid chyme

Villi

finger like projections in the small intestine that help surface area.

Excretory system function

gets rid of metabolic waste

Skin

gets rid of excess heat urea, sweating

Lung

waste production carbon dioxide

Liver

gets rid of substances in your body: urea, ammonia and other waste

Kidney

urine-urea (excess water) Ureters transport urine from each kidney to the urinary bladder . The urinary bladder stores urine until it is released from the body. Urine is release through a tube called the urethra

Osmoregulation

The balance of salt and water in the body

Kidney structure

Outer part cortex, inner part medulla, nephron filter, renal artery where the blood full of waste enters the kidney. Renal vein exits cleaned blood.

Nephron

Waste is filtered out of blood,Blood takes back what it needs glucose, protein, electrolytes and water, after absorption urine is excreted through the ureter.

Nervous system

PNS: retrieves info from the environment(internal) Sensory nerves(input). The CNS processes info and forms response(output). PNS carriers response message to glands and muscles.(Motor nerves)

Central nervous system

Brain and spinal cord

Peripheral nervous system

nerves

Nueron

carries messages in form of electrical signal called an impulse

Synapse

The are where a neuron transfers an impulse to another cell

Neurotransmitter

Chemicals that are released so an impulse can be transmitted to another cell.

Cerebrum

thinking, reasoning ,planning, making good decisions, voluntary movement

Cerebellum

balance and coordination

Brain stem

responsible for all automatic things: breathing rate, heart rate, digestion and body temp

Somatic

under conscious control voluntary, Involuntary reflex arc

Autonomic

Under unconscious control, hr, blood flow, sympathetic and parasympathetic

sympathetic

breathing rate

parasympathetic

digesting