Question and answer
The _______ is a muscle in the bottom of the chest that bends downward to draw air in, and bows upward to force air out of the lungs. A. diaphram B. bronchi C. trachea D. heart
Question
Asked 4/7/2014 11:38:59 AM
Updated 8/17/2014 6:36:12 PM
1 Answer/Comment
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User: The _______ is a muscle in the bottom of the chest that bends downward to draw air in, and bows upward to force air out of the lungs. A. diaphram B. bronchi C. trachea D. heart

Weegy: A. diaphram
johnlennons|Points 901|

User: Which part of the female reproductive system is also called the birth canal? A. Cervix B. Fallopian tube C. Uterus D. Vagina

Weegy: A part of the female reproductive system is also called the birth canal. Answer is: D. Vagina
samth007|Points 105|

User: Which of these animals has an open circulatory system? A. crayfish B. amoeba C. chicken D. mouse

Weegy: A.) amoeba s has an open circulatory system.
jher000|Points 8066|

User: From what material are the endoskeletons of sharks, rays, and skates made? A. bone B. cartilage C. scales D. skin

Weegy: The endoskeletons of sharks, rays, and skates are made of: B. cartilage.



User: There are three types of bird feathers: contour, down, and ______. A. air B. crop C. polar D. powder

Weegy: There are three types of bird feathers: contour, down, and powder.
jeifunk|Points 20033|

User: _______ supply oxygen for your cells. A. White blood cells B. Arteries C. Capillaries D. Red blood cells

Weegy: D. Red blood cells supply oxygen for your cells
MrG|Points 6786|

User: Which of the following correctly explains how the body fights diseases? A. When a pathogen enters the body, a person must get a vaccine to activate mucous production, which traps the pathogen and destroys it. B. When a pathogen enters the body, the endocrine system produces hormones that detect the pathogen and destroy it. C. When a pathogen enters the body, the immune system produces antibodies that identify and kill the pathogen. D. When a pathogen enters the body, red blood cells attach to the outside of the pathogen and carry it to the immune system, where it will be destroyed by white blood cells.

Weegy: C. When a pathogen enters the body, the immune system produces antibodies that identify and kill the pathogen.
richild|Points 0|

User: _______ help cool your body. A. Blood vessels B. Sweat glands C. Sebaceous glands D. Hair follicles

Weegy:
SWEAT GLANDS help cool your body.




User: When the heart valves do not completely close and blood leaks through, _______ occur. A. alveoli B. heart murmurs C. heart attacks D. pacemakers

Weegy: When the heart valves do not completely close and blood leaks through B. heart murmurs occur.
cjabward|Points 380|

User: _______ are filtering points throughout the body which act to filter bacteria and other large particles from the spaces between your cells. A. mucous membranes B. spleens C. allergies D. lymph nodes

Weegy: Lymph nodes are filtering points throughout the body which act to filter bacteria and other large particles from the spaces between your cells.
torngal68|Points 50|

User: What are specialized cells that tell the echinoderm if it is upside down or not? A. statocysts B. tube feet C. skin gills D. spiny skin

Weegy: A. statocysts are specialized cells that tell the echinoderm if it is upside down or not.
alfred123|Points 11266|

User: Which structures help fish navigate through the water? A. Pelvic fins B. Pectoral scales C. Olfactory bulbs D. Optic lobes

Weegy: Which structures help fish navigate through the water? B. Pectoral scales
dorkiecutipie|Points 20|

User: Leeches and earthworms are members of the _______ Phylum. A. Annelid B. Cnidaria C. Nematode D. Platyhelminthes

Weegy: Roundworms are B. Nematoda
MrG|Points 6786|

User: Animals that rely on their environment to help regulate their body temperature are called _______. A. Amphibians B. Androbians C. Ectotherms D. Endotherms

Weegy: Animals that rely on their environment to help regulate their body temperature are called Ectotherms.
jeifunk|Points 20033|

User: What extends down the length of the body and serves as the housing for the animal’s nervous system that begins in the brain? A. chordate B. hollow dorsal nerve chord C. notochord D. pharyngeal slit

Weegy: C. notochord extends down the length of the body and serves as the housing for the animal s nervous system that begins in the brain
lhyn29lhyn|Points 721|

User: The first arthropods thought to exist are called the _______. A. arachnids B. chitin C. nymphs D. trilobites

Weegy: The first arthropods thought to exist are called the: D. TRILOBITES.
andrewpallarca|Points 34761|

User: What makes up the central nervous system? A. brain and spinal cord B. occipital lobe C. cerebellum D. receptor

Weegy: The central nervous system is made up of the: A. brain and spinal cord.
alfred123|Points 11266|

User: An example of an animal called a bi-valve is: A. a lobster B. a worm C. clam D. a spider

Question
Asked 4/7/2014 11:38:59 AM
Updated 8/17/2014 6:36:12 PM
1 Answer/Comment
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Rating
3
An example of an animal called a bi-valve is: Clam.

Added 8/17/2014 6:36:12 PM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [8/17/2014 6:40:10 PM]
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Jellyfish are a part of Phylum _______. A. Arthropoda. B. Cnidaria. C. Mollusca. D. Nematocysta.
Question
Not Answered
Updated 4/7/2016 6:05:38 PM
1 Answer/Comment
Jellyfish are a part of Phylum Cnidaria.
Added 4/7/2016 5:52:25 PM
This answer has been confirmed as correct and helpful.
What is the period of time in an adolescent's life when sexual maturity begins? A. Awareness B. Development C. Maturation D. Puberty
Weegy: Puberty is the period of time in an adolescent's life when sexual maturity begins. User: Your _______ system, which consists of your skin, hair, and sweat glands, is really the largest single organ on your body. A. digestive B. excretory C. integumentary D. endocrine (More)
Question
Updated 4/7/2014 11:54:16 AM
1 Answer/Comment
Your INTEGUMENTARY system, which consists of your skin, hair, and sweat glands, is really the largest single organ on your body.
Added 4/7/2014 11:54:16 AM
This answer has been confirmed as correct and helpful.
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