Quiz Over Reproductive Endocrinologist

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Quiz Over Reproductive Endocrinologist - Quiz

This is to test your understanding of the introduction to embryology of the brain section


Questions and Answers
  • 1. 

    What structure does the nervous system orginate from?

    • A.

      Neural fold

    • B.

      Neural tube

    • C.

      Neural Plate

    Correct Answer
    C. Neural Plate
    Explanation
    The nervous system originates from the neural plate. During embryonic development, the neural plate forms from the ectoderm, which is one of the germ layers. The neural plate then folds and forms the neural tube, which eventually develops into the brain and spinal cord. The neural plate is the initial structure from which the nervous system begins to develop.

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  • 2. 

    Which statement is true about neurulation?

    • A.

      It occurs at day 7

    • B.

      It's the formation of the neural tube

    • C.

      It's the formation of the nervous system

    • D.

      It is the production of cerebrospinal fluid

    Correct Answer
    B. It's the formation of the neural tube
    Explanation
    Neurulation refers to the process of forming the neural tube, which eventually develops into the central nervous system. It is a critical step in the early development of an embryo, occurring during the third week of gestation. The neural tube gives rise to the brain and spinal cord, playing a crucial role in the formation of the nervous system.

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  • 3. 

    Which of these is correct?

    • A.

      The mesencephalon is the forebrain

    • B.

      The mesencephalon is the midbrain

    • C.

      The rhombencephalon is the forebrain

    Correct Answer
    B. The mesencephalon is the midbrain
    Explanation
    The correct answer is that the mesencephalon is the midbrain. The mesencephalon, also known as the midbrain, is a region of the brain that is located between the forebrain and the hindbrain. It plays a crucial role in relaying sensory and motor information and is involved in functions such as visual and auditory processing, movement control, and sleep/wake cycles.

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  • 4. 

    The basal plates contain sensory cells?

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The basal plates contain motor cells

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  • 5. 

    The sultans limitans...

    • A.

      Separates the two neural plates

    • B.

      Separates the metencephalon and mylencephalon of the hindbrain

    • C.

      Separates the minbrain from the hindbrain

    Correct Answer
    A. Separates the two neural plates
    Explanation
    The sultans limitans refers to a structure or process that separates the two neural plates. The neural plates are the early stages of the developing nervous system in vertebrates. They eventually give rise to the spinal cord and brain. The sultans limitans could be a physical barrier or a signaling mechanism that prevents the fusion or mixing of the two neural plates during development. This separation is crucial for the proper formation and differentiation of the nervous system.

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  • 6. 

    Which region develops into the cerebral hemispheres?

    • A.

      Diencephalon

    • B.

      Myelencephalon

    • C.

      Mesencephalon

    • D.

      Telencephalon

    Correct Answer
    D. Telencephalon
    Explanation
    The telencephalon develops into the cerebral hemispheres. The cerebral hemispheres are the largest part of the brain and are responsible for higher cognitive functions such as thinking, memory, and perception. The telencephalon undergoes significant growth and differentiation during development to form the complex structures and connections of the cerebral hemispheres.

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  • 7. 

    The metencephalon of the rhombencephalon forms the pons and cerebellum?

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The metencephalon is a region of the brain that develops from the rhombencephalon during embryonic development. It gives rise to the pons and cerebellum, which are important structures involved in coordinating movement and maintaining balance. Therefore, the statement that the metencephalon forms the pons and cerebellum is true.

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  • 8. 

    The pons is where balance and co-ordination are controlled?

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The cerebellum is where balance and co- ordination are controlled

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  • 9. 

    ... makes up the hindbrain?

    • A.

      Metencephalon

    • B.

      Myelencephalon

    • C.

      Mesencephalon

    Correct Answer(s)
    A. Metencephalon
    B. Myelencephalon
    Explanation
    The hindbrain is made up of two main parts: the metencephalon and the myelencephalon. The metencephalon consists of structures such as the cerebellum and the pons, while the myelencephalon includes the medulla oblongata. These two parts together form the hindbrain, which is responsible for regulating vital functions such as breathing, heart rate, and coordination of movement. The mesencephalon, on the other hand, is part of the midbrain and is not included in the hindbrain.

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  • 10. 

    The forebrain consits of which regions?

    • A.

      Mesencephalon

    • B.

      Telencephalon

    • C.

      Myelencephalon

    • D.

      Diencephalon

    Correct Answer(s)
    B. Telencephalon
    D. Diencephalon
    Explanation
    The forebrain consists of the telencephalon and diencephalon. The telencephalon is responsible for higher cognitive functions such as perception, thinking, and memory. It includes the cerebral cortex, hippocampus, and basal ganglia. The diencephalon includes structures like the thalamus and hypothalamus, which play important roles in relaying sensory information, regulating body temperature, and controlling hormone release. These regions are crucial for various complex processes in the brain, making them essential components of the forebrain.

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  • 11. 

    What connects the two lateral ventricles?

    • A.

      Interventricular foramen

    • B.

      Cerebral aqueduct

    • C.

      Median aperture

    Correct Answer
    A. Interventricular foramen
    Explanation
    The interventricular foramen is the correct answer because it is the structure that connects the two lateral ventricles of the brain. It allows for the flow of cerebrospinal fluid between the ventricles, helping to maintain the balance of fluid in the brain. The cerebral aqueduct connects the third and fourth ventricles, not the lateral ventricles. The median aperture is an opening in the fourth ventricle, also not connecting the lateral ventricles.

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  • 12. 

    In the diencephalon on the forebrain which sulcus separates the hypothalamus from the thalamus?

    • A.

      Thalamic sulcus

    • B.

      Hyopthamlamic sulcus

    • C.

      Rhombencephalic sulcus

    Correct Answer
    B. Hyopthamlamic sulcus
    Explanation
    The correct answer is the hypothalamic sulcus. This sulcus separates the hypothalamus from the thalamus in the diencephalon of the forebrain. The hypothalamus plays a crucial role in regulating various bodily functions, such as temperature, hunger, thirst, and hormone production. The thalamus, on the other hand, acts as a relay station for sensory information, relaying it to the appropriate areas of the cerebral cortex. The hypothalamic sulcus serves as a boundary between these two important structures in the brain.

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