science test: reproductive, nervous, and endocrine system
Stimulus
A change in an organism's environment that causes a response
positive feedback
A control system where the effect of a hormone causes more of the hormone to be released
Ovulation
The end of this phase has caused an egg to be released from the ovary in a process
Endocrine System
The system is made up of glands found inside the body that helps respond to changes in the environment
cornea
The transparent window where light enters
What is the purpose of the nervous system and what are the organs.
purpose of the nervous system: is to send and receive messages that control your body. organs: the brain, spinal cord, and all nerves.
thryoid gland
regulates metabolism at the base of the neck
Which organ system works with the endocrine system?
reporductive
Which organ system works with the nervous system?
skeletal
How can you become paralyzed?
spinal cord injures
What is puberty?
A stage where our bodies begin to produce sex hormones through the gonads which causes are sex characteristics
Know the difference between stimuli and responses
A stimuli is a change in an organism's environment, which causes responses which is a reaction to the stimuli.
reproductive system
A system that enables humans to create offspring
eardrum
A thin membrane between the outer ear and the inner ear
spinal cords
A tube-like structure of neurons
penis
A tube-like structure that delivers sperm to the female reproductive system
retina
An area at the back of the eye that has two types of cells, rod cells and cone cells, with photo receptors
reflex
An automatic movement in response to stimuli.
What is the difference between sperm and egg?
An egg is 2,000 times larger than sperm
brain stem
Area of the brain that controls involuntary functions
Neuorn
Basic functioning units of the nervous system
optic nerve
Carries light messages to the brain. The brain then interprets the messages to allow us to see
Know the 3 parts of the brain and their main functions.
Cerebrum: the largest part of the brain, controls certain voluntary movements Cerebellum: receives messages from sense organs and controls body movements. Controls how muscles work together, and controls balance, movement, and coordination. Medulla: Also known as the brain stem, controls involuntary movements.
menustral cycle
Changes that the ovaries and uterus go through
hormones
Chemicals that help the body adjust to changes
negative feedback
Control system where the effect of the hormone inhibits the release of a hormone
What does testosterone do to the male body?
Develops facial hair, broadens shoulders, voice deepens, produces sperm.
what is the purpose of the endocrine systems and what are its glands
Endocrine glands release hormones into the bloodstream. This lets the hormones travel to cells in other parts of the body. The endocrine hormones help control mood, growth and development, the way our organs work, metabolism, and reproduction
ovaries
Organ where oocytes are stored and mature
What is the purpose of the male reproductive system and what are the organs.
Organs: testes, scrotum, and penis Purpose: to produce sperm and make humans
What is the purpose of the female reproductive system and what are the organs.
Organs: vagina, ovaries, fallopian tubes, and uterus Purpose: make egg cells and make humans
taste buds
Papillae that detect a taste and send it to the brain where it is interpreted
Cerebellum
Part of the brain that coordinates voluntary muscle movement and regulates balance and posture.
vagina
Part of the female reproductive system that connects the uterus to the outside of the body
sensory system
Part of your nervous system that detects or senses the environment
Adrenal
Releases adrenaline, two at the kidneys
receptor
Special structures that detect stimuli
What is the journey sperm take when the leave the human body?
Sperm leave the testes through a tube It mixes with semen to help give it energy and nutrients to move This mixture passes into another tube under the bladder called the urethra It leaves the body out of the same hole in the penis as urine does
iris
The colored part of your eye
Fertilization
The egg might join with a sperm in a process called fertilization
synapse
The gap between two neurons
testes
The male reproductive organ that produces sperm
olfactory nerve
The nerve that sends impulses to the brain where the scent is detected
nervous system
The part of an organism that gathers, processes, and response to information
cerebrum
The part of the brain that controls memory, language, and thought
Autonomic and somatic how do they relate to the nervous system.
The somatic nervous system is responsible for voluntary actions, and the autonomic nervous system is responsible for involuntary actions.
How are the spinal cord and emergency reactions related to the nervous system?
The spinal cord reacts to emergencies before the brain even detects them, which is like an emergency reflex.
Know the 5 senses and how they respond to stimuli.
Touch: Pain, pressure, and changes in temperature send nerve impulses to the brain where it is interpreted. Taste: Our taste buds react to different tastes, and nerve impulses are sent to the brain Hearing: Vibrations are converted into nerve impulses that travel through the auditory nerve up into the brain Sight: The parts in our eye, such as the cornea and lens, work together to detect our surroundings. Smell: Odors are detected and the nerve endings join with the olfactory nerve where impulses are sent to the brain
What does estrogen do to the female body?
Widens hips, breasts develop, and females gain the ability to produce eggs.
What is the control center of the nervous system?
brain
What are the parts of the nervous system?
brain, spinal cord, nerves
Which organ system works with the reproductive system?
endocrine
egg
female reproductive cell
Pituary Gland (Master Gland)
found at the base of the brain. "Master gland"-controls other glands
Peripheral Nervous System
has nerves and motor neurons That transmit information between the CNS and the rest of the body.
lens
helps to focus light
Hypothalamus
links nervous and endocrine systems, controls pituitary gland, found in the brain
Pancreas
located behind the stomach and infront of the spine and produces hormones, insulin, and glucagon which controls blood glucose level
thymus
located in the chest, helps the immune system develop in children
Gonads
located in the groin area, sex glands that produce cells needed for reproduction. They are different in males and females.
pineal gland
located in the middle of the brain, secretes melatonin=hormone that regulates sleeping at night and waking up in the morning
parathyroid glands
located in the neck, four small glands that regulate blood calcium levels
sperm
male reproductive cell
Central Nervous System
the brain and the spinal cord.
What direction do nerve impulses travel?
up to the brain
