How is the system for control and coordination evolved in a frog?
The system for control and coordination is highly evolved in the frog.
How many pairs of cranial nerves arise from the frog’s brain?
Ten pairs of cranial nerves arise from the brain.
What encloses the frog’s brain?
The brain is enclosed in a bony structure called the brain box (cranium).
which three parts is the frog’s brain divided?
Forebrain, midbrain, and hindbrain.
What structures are included in the frog’s forebrain? (3) F-F
Olfactory lobes, paired cerebral hemispheres, and unpaired diencephalon.
What characterises the midbrain of a frog?
Back: The midbrain is characterised by a pair of optic lobes.
Front: What structures form the hindbrain in a frog? ( CM)
Back: Cerebellum and medulla oblongata.
How does the medulla oblongata connect to the spinal cord in a frog?
It passes through the foramen magnum and continues into the spinal cord, which is enclosed in the vertebral column.
What are the different types of sense organs in a frog?
Back: Organs of touch (sensory papillae), taste (taste buds), smell (nasal epithelium), vision (eyes), and hearing (tympanum with internal ears).
Which sense organs in frogs are well-organized structures?
Eyes and internal ears.
How are the other sense organs in frogs structured?
Touch, taste, and smell organs are cellular aggregations around nerve endings
Describe the eyes of a frog.
Simple or compound
Back: A pair of spherical structures situated in the orbit of the skull; they are simple eyes, possessing only one unit.
Do frogs have external ears?
Back: No, external ears are absent; only the tympanum is visible externally.
What functions does the frog’s ear serve?
Hearing and balancing (equilibrium).
What do the testes look like?
Pair of yellow ovals.
Q: Where are the testes attached?
Upper part of the kidneys.
What is the name of the Attachment double fold peritonium called
Mesorchium.
How many Vasa efferentia are there?
A: 10–12.
Q: Where do the Vasa efferentia lead?
A: Into Bidder’s canal (inside the kidney).
What duct carries both sperm and urine?
A: Urinogenital duct.
Q: Where does the urinogenital duct empty?
A: Into the cloaca.
Q: What three things pass through the cloaca?
A: Poop (faecal matter), urine, and sperm.
What are the main female reproductive organs mentioned?
Back: A pair of ovaries
Where are the ovaries located in the female frog?
Back: Near the kidneys
