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  • Thống kê

  • truy cập   (chi tiết)
    trong hôm nay
  • lượt xem
    trong hôm nay
  • thành viên
  • Dành cho Quảng cáo

    Chào mừng quý vị đến với Thư viện Bài giảng điện tử.

    Quý vị chưa đăng nhập hoặc chưa đăng ký làm thành viên, vì vậy chưa thể tải được các tư liệu của Thư viện về máy tính của mình.
    Nếu đã đăng ký rồi, quý vị có thể đăng nhập ở ngay ô bên phải.

    Bài 16. Thực hành: Mổ và quan sát giun đất

    Tham khảo cùng nội dung: Bài giảng, Giáo án, E-learning, Bài mẫu, Sách giáo khoa, ...
    Nhấn vào đây để tải về
    Báo tài liệu có sai sót
    Nhắn tin cho tác giả
    (Tài liệu chưa được thẩm định)
    Nguồn:
    Người gửi: Đặng Thị Ánh Tuyết (trang riêng)
    Ngày gửi: 22h:11' 19-10-2008
    Dung lượng: 495.0 KB
    Số lượt tải: 1821
    Số lượt thích: 2 người (Nguyển Thị Hồng Thơm, Nguyễn thị thanh)
    1. Cấu tạo ngoài
    a/ Xử lí mẫu
    - Bước 1: rửa sạch đất ở cơ thể giun.
    - Bước 2: Làm giun chết trong hơi cồn loãng.
    - Bước 3: Đặt giun lên khay mổ và quan sát.
    b/ Quan sát cấu tạo ngoài
    - Quan sát các vòng tơ mỗi đốt
    - Xác định mặt lưng, mặt bụng:
    - Tìm đai sinh dục bằng kính lúp.
    mặt lưng màu sẫm ; mặt bụng có các lỗ sinh dục.
    - Chú thích vào hình vở bài tập.
    Lỗ miệng
    Đai Sinh Dục
    Lỗ hậu môn
    Lỗ miệng
    Vòngtơ
    Lỗ SD cái
    Lỗ SD đực
    Vòng tơ
    Vòng tơ
    Đai SD
    2. Cấu tạo trong
    a/ Cách mổ



    Bước 2: Dùng kẹp kéo da, dùng kéo cắt 1 đường dọc chính giữa lưng về phía đuôi.

    Bước1: Đặt giun nằm sấp giữa khay mổ. Cố định đầu và đuôi bằng đinh ghim.

    2. Cấu tạo trong
    a/ Cách mổ
    Bước 3: Dùng kẹp phanh thành cơ thể, dùng dao tách ruột khỏi thành cơ thể.
    Bước 4: Phanh thành cơ thể đến đâu cắm ghim tới đó. Dùng kéo cắt dọc cơ thể về phía đầu.
    b/ Quan sát cấu tạo trong
    - Cơ quan tiêu hóa:

    - Cơ quan thần kinh:

    - Chú thích vào hình vẽ.
    Lỗ miệng
    2. Hầu
    3. Thực quản
    4. Diều
    5. Dạ dày cơ
    6. Ruột
    7. Ruột tịt
    8. Hạch não
    9. Vòng hầu
    10. Chuỗi TK bụng
    Yêu cầu:

    - Hoàn thành bài thực hành vào vở bài tập.

    - Các nhóm cử 2 bạn thu dọn và vệ sinh dụng cụ thực hành.
    No_avatar
    Tuyet voi! Hy vong se con nhieu bai giang h­ay hon nua!!!Ngậm tiền
    No_avatar
    Hay quá!Em học lớp 7,đang phải tìm tài liệu về cái này,thanks nha!Cười
    No_avatar

    hay qua dung cai minh can

    thank you vẻy muchNháy mắt

    No_avatar
    em đang cần vẽ cái này gấp mà có liền hay ghê thanks nhiều.Hôn
    No_avatar
    great... tui mong sao co nhiu bai nhu the nay nua...:d
    No_avatar

    bai hay qua

    Tuyệt

    No_avatar

    e cam~ on nhiu` nha!!! hjhjhj e dg can ve~~~~~ cai ney`````````

     

    No_avatarf

    hay qá. E đag vẽ cái này

    No_avatar

    hay

    No_avatar

    đề thi chọn HSG HN tại đây http://violet.vn/thpt-yenvien-hanoi

     
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